section 07525 - buildsite · web viewfire resistant glass fiber mat used as a separation sheet over...

GAF EVERGUARD® TPO DESIGN LINE May 18, 2023GUIDE SPECIFICATION

SECTION 07540

THERMOPLASTIC SINGLE-PLY ROOFING

PREPARED BY:

GAF® Architectural Information Services

PROJECT NO:

Note: GAF does not practice architecture or engineering. This Design Line is provided as a guide specification and is based on criteria provided to GAF. GAF has not observed the jobsite conditions, contract specifications, or other documents and shall not be construed in any manner to be the designer of record.

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GAF EVERGUARD® TPO DESIGN LINE GUIDE SPECIFICATION

PART 1 GENERAL

1.01 SUMMARY

A. Section Includes1. Thermoplastic Polyolefin Single-Ply Roofing Membrane2. Insulation

B. Related Sections1. Section 06100: Rough Carpentry 2. Section 07620: Sheet Metal Flashing and Trim 3. Section 15430: Plumbing Specialties

1.02 REFERENCES

A. Factory Mutual (FM Global) - Approval Guide

B. Underwriters Laboratories (UL) - Roofing Systems and Materials Guide (TGFU R1306)

C. American Society for Testing and Materials (ASTM) - Annual Book of ASTM Standards

D. Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA) - Architectural Sheet Metal Manual

E. National Roofing Contractors Association (NRCA)

F. American Society of Civil Engineers (ASCE)

G. U.S. Green Building Council (USGBC)

H. California Title 24 Energy Efficient Standards

I. ENERGY STAR

1.03 DEFINITIONS

A. Roofing Terminology: Refer to ASTM D1079 and the glossary of the National Roofing Contractors Association (NRCA) Roofing and Waterproofing Manual for definitions of roofing terms related to this section.

1.04 LEED CERTIFICATION

A. Provide a roofing system that will achieve or aid in the qualification of points satisfying1. Sustainable Site credit 7.2 - Heat Island Effect - Roof.2. Materials & Resource credit 4 - Recycled Content.3. Materials & Resource credit 5 - Local and Regional Materials.4. Indoor Air Quality credit 4.1 - Low-Emitting Materials - Adhesives and Sealants.

1.05 SUBMITTALS

A. Product Data: Provide product data sheets for each type of product indicated in this section.

B. Shop Drawings: Provide manufacturers standard details and approved shop drawings for the roof system specified.

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C. Samples: Provide samples of insulations, fasteners, membrane materials and accessories for verification of quality.

D. Certificates: Installer shall provide written documentation from the manufacturer of their authorization to install the roof system, and eligibility to obtain the warranty specified in this section.

E. L.E.E.D. submittal: Coordinate with Section 01115 - Green Building Requirements, for LEED certification submittal forms and certification templates

1.06 QUALITY ASSURANCE

A. Manufacturer’s Qualifications: GAF shall provide a roofing system that meets or exceeds all criteria listed in this section.

B. Installer’s Qualifications: ***CHOOSE ONE***1. Installer shall be classified as a Master or Master Select contractor as defined and certified by GAF. 2. Installer shall be classified as a Master Select contractor as defined and certified by GAF. 3. Installer shall be classified as a Master contractor as defined and certified by GAF.4. Installer shall be classified as an Authorized contractor as defined and certified by GAF.

***WellRoof only***C. Installer’s Qualifications:

1. Installer shall be classified as a Master or Master Select contractor as defined and certified by GAF. 2. Installer must be a GAF® Certified Maintenance Professional (CMP) to offer WellRoof™ Guarantee

Extension Program.

D. Source Limitations: All components listed in this section shall be provided by a single manufacturer or approved by the primary roofing manufacturer.

E. Final InspectionManufacturer’s representative shall provide a comprehensive final inspection after completion of the roof system. All application errors must be addressed and final punch list completed.

1.07 PRE-INSTALLATION CONFERENCE

A. Prior to scheduled commencement of the roofing installation and associated work, conduct a meeting at the project site with the installer, architect, owner, GAF representative and any other persons directly involved with the performance of the work. The installer shall record conference discussions to include decisions and agreements reached (or disagreements), and furnish copies of recorded discussions to each attending party. The main purpose of this meeting is to review foreseeable methods and procedures related to roofing work.

1.08 PERFORMANCE REQUIREMENTS

A. Provide an installed roofing membrane and base flashing system that does not permit the passage of water, and will withstand the design pressures calculated in accordance with the most current revision of ASCE 7.

B. GAF shall provide all primary roofing materials that are physically and chemically compatible when installed in accordance with manufacturers current application requirements.

****Extreme TPO only*****

C. Heat Aging

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1. Test Method D573. Age sheet specimens for 150 days at 275°F. After exposure, the specimens shall be removed, wrapped around a 3 inch mandrel, and inspected for cracks and crazing. A specimen is rated “pass” if no cracks or crazing is observed.

D. Weather Resistance:1. Test Method G151 and G155, using conditions detailed in ASTM D6878 except that the radiant exposure

should be 40,320 kJ/m2.nm at 340 nm (i.e. 4 times the D6878 standard). After exposure, the specimens shall be removed, wrapped around a 3 inch mandrel, and inspected for cracks and crazing. A specimen is rated “pass” if no cracks or crazing is observed.

1.09 REGULATORY REQUIREMENTS

A. All work shall be performed in a safe, professional manner, conforming to all federal, state and local codes.

B. Exterior Fire Test Exposure: Provide a roofing system achieving a UL Class A B C rating for roof slopes indicated.

C. Windstorm Classification: Provide a roofing system which will achieve a Factory Mutual 1-60 1-75 1-90 1-120 1-135 1-150 1-180 wind uplift rating, as listed in the current FM Approval Guide.

1.10 DELIVERY, STORAGE AND HANDLING

A. Deliver all roofing materials to the site in original containers, with factory seals intact. All products are to carry either a GAF® or BMCA® label.

B. Store all pail goods in their original undamaged containers in a clean, dry location within their specified temperature range.

C. Do not expose materials to moisture in any form before, during, or after delivery to the site. Reject delivery of materials that show evidence of contact with moisture.

D. Remove manufacturer supplied plastic covers from materials provided with such. Use “breathable” type covers such as canvas tarpaulins to allow venting and protection from weather and moisture. Cover and protect materials at the end of each work day. Do not remove any protective tarpaulins until immediately before the material will be installed.

E. Materials shall be stored above 55°F (12.6°C) a minimum of 24 hours prior to application.

1.11 PROJECT CONDITIONS

A. Weather1. Proceed with roofing only when existing and forecasted weather conditions permit. 2. Ambient temperatures must be above 45°F (7.2°C) when applying hot asphalt or water based adhesives.

1.12 WARRANTY

A. Provide Manufacturers standard EverGuard® Diamond Pledge Guarantee with single source coverage and no monetary limitation where the manufacturer agrees to repair or replace components in the roofing system, which cause a leak due to a failure in materials or workmanship.1. Duration: Five(5), Ten (10), Fifteen (15), Twenty (20), Twenty-Five (25), Thirty (30) years from the date

of completion.

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B. Provide Manufacturers standard EverGuard® Diamond Pledge Guarantee with the WELL ROOF Guarantee Extension Program. Provides single source coverage* and no monetary limitation, where the manufacturer agrees to repair or replace components in the roofing system, which cause a leak due to a failure in materials or workmanship.1. Duration: Ten (10) Fifteen (15) Twenty (20) Twenty-Five (25) Thirty (30) years from the date of

completion.2. Extension: GAF also guarantees to the original or first subsequent owner that coverage shall be extended

by 25% of the original guarantee length, provided that the roof in inspected and maintained in accordance with the MAINTAINENCE section of this specification.

3. Contractor must be a GAF® Certified Maintenance Professional (CMP) to obtain WellRoof™ Guarantee Extension.

C. Provide Manufacturers standard GAF® All-American Pledge Guarantee with single source coverage and no monetary limitation where the manufacturer agrees to repair or replace components in the roofing system, which cause a leak due to a failure in materials or workmanship.1. Duration: Twenty (20) years from the date of completion.

D. Provide Manufacturers standard EverGuard® System Pledge Guarantee with single source coverage and a monetary limitation of one (1) dollar per square foot where the manufacturer agrees to repair or replace components in the roof system, which cause a leak due to failure in materials or workmanship.1. Duration: Five (5), Ten (10), Fifteen (15), Twenty (20), Twenty-Five (25), Thirty (30) years from the date

of completion.

*Materials and workmanship of listed products within this section when installed in accordance with current GAF application and specification requirements. Contact GAF Contractor Services for the full terms and conditions of the guarantee.

E. Provide Manufacturers standard WeatherStopper® Integrated Roofing System Guarantee where the manufacturer agrees to repair or replace the portion of the roofing materials, which have resulted in a leak due to a manufacturing defect or defects caused by ordinary wear and tear.1. Duration: Five(5), Ten (10), Fifteen (15), Twenty (20) years from the date of completion.

F. Provide Manufacturers standard prorated material warranty where the manufacturer agrees to repair or replace the portion of the roofing materials that have resulted in a leak due to a manufacturing defect or defects caused by ordinary wear and tear.1. Duration:

G. ***FA 60 and 80 mil only***EverGuard® TPO Puncture Resistance Limited Warranty: GAF warrants to the original building owner, that the EverGuard® TPO roof membrane will provide puncture and tear resistance when installed and maintained in accordance with GAF’s requirements.

H. EverGuard® TPO Reflectivity Limited Warranty: GAF warrants to the original building owner, that the EverGuard® TPO white roof membrane will meet or exceed the initial and “aged” ENERGY STAR® reflectivity requirements for low slope roofing membranes (65% initial, 50% aged) when installed and maintained in accordance with GAF’s requirements. The aged reflectivity shall meet or exceed these requirements when measured after cleaning the membrane in accordance with GAF recommendations.

PART 2 PRODUCTS

2.01 ACCEPTABLE MANUFACTURER

A. GAF® - 1361 Alps Road, Wayne, NJ 07470

2.02 SELF ADHERING VAPOR RETARDER

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A. SBS Modified self-adhering leak barrier that serves as a low-slope vapor retarder. Each full roll contains 2 squares (222.5 gross sq ft) (20.6 m2) of roofing material, 67.8’ x 39.4”, and 0.065” (65 mil) thick, weighing 65.3 lbs. Underroof® 2 Low-Slope Vapor Retarder, by GAF®.

B. SBS Modified self-adhering leak barrier that serves as a low-slope vapor retarder. Each full roll contains 2 squares (18.6 m2) of roofing material, 61’ x 39.4”. Underroof™ HT (High Temperature) Low-Slope Vapor Retarder, by GAF®.

2.03 AIR AND VAPOR RETARDER SYSTEM ***CHOOSE APPROPRIATE PRODUCTS***

A. Asphalt impregnated kraft paper with fiberglass strand reinforced edges; available in 32” X 405’ (10 square) rolls and 96” X 405’ (30 square) rolls, Permate Vapor Retarder by GAF.

B. Black, rubber-base solvent type adhesive available in 5 gallon pails and 50 gallon drums, Permate Adhesive by GAF.

C. Specially compounded, flexible, black 4 mil vinyl sheet available in 32” X 405’ (10 square) rolls, Lexsuco Vapor Retarder by GAF.

D. Cold applied, black rubber based adhesive with a chlorinated solvent for fire retardency. Available in 5 gallon pails and 50 gallon drums, Lexsuco R907-T Adhesive by GAF.

2.04 INSULATION

A. Rigid polyisocyanurate board, with a strong white or black fibrous glass facer conforming to or exceeding the requirements of ASTM C 1289 / FS HH-I-1972. EnergyGuard Polyiso, with the following characteristics:1. Board Thickness:2. Thermal Resistance (LTTR value) of:

B. Rigid, high-density polyisocyanurate board, with a strong white or black fibrous glass facer conforming to or exceeding the requirements of ASTM C 1289 / FS HH-I-1972. EnergyGuard HD Polyiso, with the following characteristics:1. Board Thickness: ½”2. Thermal Resistance (R value) of: 2.53. Compressive Strength: 80 psi

C. Rigid, high-density polyisocyanurate board, with a strong white or black fibrous glass facer conforming to or exceeding the requirements of ASTM C 1289 / FS HH-I-1972. EnergyGuard HD Plus Polyiso, with the following characteristics:1. Board Thickness: ½”2. Thermal Resistance (R value) of: 2.53. Compressive Strength: 110 psi

D. High-density PolyIso roof insulation, provided by others:1. Board Thickness:2. Thermal Resistance (LTTR value) of:

E. Rigid polyisocyanurate board, with a strong white or black fibrous glass facer conforming to or exceeding the requirements of ASTM C 1289 / FS HH-I-1972. EnergyGuard Tapered Polyiso, with the following characteristics:1. Board Thickness: tapered2. Thermal Resistance (LTTR value) of: varies

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F. Rigid polyisocyanurate foam insulation with 1/2" perlite roof insulation laminated to one side and a strong fibrous glass facer on the other; conforms to or exceeds the requirements of ASTM C 1289 / FS HH-I-1972. EnergyGuard Composite, with the following characteristics:1. Board Thickness:2. Thermal Resistance (LTTR value) of:

G. Rigid polyisocyanurate foam insulation with 1/2" gypsum board laminated to one side and a strong fibrous glass facer on the other; conforms to or exceeds the requirements of ASTM C 1289 / FS HH-I-1972. EnergyGuard Composite, with the following characteristics:1. Board Thickness:2. Thermal Resistance (LTTR value) of:

H. Rigid polyisocyanurate foam insulation with 1/2" cellulose fiber board laminated to one side and a strong fibrous glass facer on the other; conforms to or exceeds the requirements of ASTM C 1289 / FS HH-I-1972. EnergyGuard Composite, with the following characteristics:1. Board Thickness:2. Thermal Resistance (LTTR value) of:

I. Rigid interlocking natural long fibers, asphalt moisture resistant with treated top face to further reduce asphalt absorption; conforms to or exceeds the requirements of ASTM C 208, C209 / FS LLL-1-535B, with the following characteristics:1. Board Thickness:2. Thermal Resistance (LTTR value) of:

J. Expanded perlite mineral aggregate board conforming to or exceeding the requirements of FS HH-I-529b, ANSI/ASTM C 728. EnergyGuard Perlite, with the following characteristics:1. Board Density: 9-lb./cu. ft. min.2. Board Thickness:3. Thermal Resistance (R value) of:

K. Expanded perlite mineral aggregate board conforming to or exceeding the requirements of FS HH-I-529b, ANSI/ASTM C 728. EnergyGuard Tapered Perlite, with the following characteristics:1. Board Density: 9-lb./cu. ft. min.2. Board Thickness:3. Thermal Resistance (R value) of:

L. Overlayment board made of cellulose fiber conforming to or exceeding the requirements of FS LLL-I-535, Class C, ANSI/ASTM C 208, with the following characteristics:1. Board Thickness: 1/2"2. Thermal Resistance (R value) of: 1.32

M. ASTM C-578 Type II, expanded polystyrene recover board (EPS), with the following characteristics:1. Compressive Strength: 15 psi minimum2. Board Density: 1.35 lbs. per cubic foot. minimum3. Board Thickness: 4. Thermal Resistance:

N. ASTM C-578 Type IX, High density expanded polystyrene board (EPS), with the following characteristics:1. Compressive Strength: 25 psi nominal2. Board Density: 1.8 lbs. per cubic foot. minimum3. Board Thickness:4. Thermal Resistance (R value) of:

O. ASTM C-578 Type X, extruded polystyrene board (XPS), with the following characteristics:

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1. Compressive Strength: 15 psi minimum2. Board Density: 1.3 lbs. per cubic foot. minimum3. Board Thickness:4. Thermal Resistance (R value) of:

P. ASTM C-578 Type X, 3/8” Extruded polystyrene fan-fold board (XPS), with the following characteristics:1. Compressive Strength: 15 psi minimum2. Board Density: 1.3 lbs. per cubic foot. minimum3. Board Thickness: 3/8” (5mm)4. Thermal Resistance (R value) of: 1.5

2.05 ROOF BOARD

A. Underlayment or overlayment board with a water-resistant and silicone treated gypsum core with glass fiber facers embedded on both sides, and pre-primed on one side. GP Dens-Deck Prime Roof Board, distributed by GAF®.1. Board Thickness: 2. Thermal Resistance (R value) of:

B. Underlayment or overlayment board with a water-resistant and silicone treated gypsum core with glass fiber facers embedded on both sides. GP Dens-Deck Roof Board, distributed by GAF®1. Board Thickness: 2. Thermal Resistance (R value) of:

C. Underlayment or overlayment board with a water-resistant and silicone treated gypsum core with glass fiber facers embedded on both sides and a factory-applied low perm, integrated, durable coating that enhances bond strength of the membrane system. GP Dens-Deck DuraGuard™ Roof Board, distributed by GAF®1. Board Thickness: 2. Thermal Resistance (R value) of:

2.06 ROOF BOARD

A. Fiber-reinforced gypsum panel with an integral water-resistant core. Securock® Roof Board by US Gypsum.1. Board Thickness: ¼”2. Thermal Resistance (R value) of: .20

2.07 SEPARATION MEMBRANE

A. Fire Resistant non woven fiberglass slip sheet used as a separation sheet over polystyrene foam insulation or beneath insulation over wood substrates providing a UL class A fire rating. Each roll contains ten (10) squares (1,000 sq. ft.) of material, 6’ x 166.7’ (1.83m x 50.8m), 110 lbs nominal weight, VersaShield Solo® Fire Resistant Slip Sheet by GAF.

B. Fire Resistant non woven fiberglass sheet used as a separation sheet over polystyrene foam insulation or beneath insulation over wood substrates providing a UL class A fire rating. Each roll contains three and one-half squares (350 sq. ft.) of material, 42” x 100’ (1.07m x 30.48m), 52.5 lbs nominal weight, VersaShield ® Fire Resistant Roof Deck Protection by GAF.

C. Water-based, low VOC, self extinguishing liquid applied coating system using patent pending FireShield technology. Available in 5 gal pails and 55 gal drums, FireOut™ Fire Barrier Coating by GAF.

D. Non-woven polyester UV-stabilized mat, 3 oz./sq. yd. used as a separation sheet beneath membranes as a protection layer and used over membranes in ballast applied assemblies. Each roll contains thirty (30) squares

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(3,000 sq. ft.) of material, 10’ x 300’ (3.07m x 92.3m), 75 lbs. (34.1 kg), Polymat Separation Layer 3 oz. by GAF.

E. Non-woven polyester UV-stabilized mat, 6 oz./sq. yd. used as a separation sheet beneath membranes as a protection layer and used over membranes in ballast or paver applied assemblies. Each roll contains thirty (30) squares (3,000 sq. ft.) of material, 10’ x 300’ (3.07m x 92.3m), 125 lbs. (56.8 kg), Polymat Cushioning Layer 6 oz. by GAF.

F. Fire resistant glass fiber mat used as a separation sheet over polystyrene foam insulation or beneath insulation over wood substrates. Each roll contains ten (10) squares (1,000 sq. ft.) of material, 4’ x 250’ (1.2m x 76.9m), 80 lbs. (36.4 kg), Fiberglass Fire Sheet 10.

G. Fire resistant glass fiber mat used as a separation sheet over polystyrene foam insulation or beneath insulation over wood substrates. Each roll contains four (4) squares (420 sq. ft.) of material, 4’ x 105’ (1.2m x 32.3m), 79 lbs. (35.9 kg), Fiberglass Fire Sheet 50.

2.08 MEMBRANE MATERIALS

A. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.045 inch (45 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed, FM Approved, Dade County Product Approval, Florida Building Code Approved. White membrane is Energy Star Listed, CRRC Listed and Title 24 Compliant. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 256 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 142 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard® TPO 45 mil thermoplastic single-ply roofing membrane by GAF.

B. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.060 inch (60 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed, FM Approved, Dade County Product Approval, Florida Building Code Approved. White membrane is Energy Star Listed, CRRC Listed and Title 24 Compliant. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 322 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 162 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard® TPO 60 mil thermoplastic single-ply roofing membrane by GAF.

C. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.080 inch (80 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed, FM Approved, Dade County Product Approval, Florida Building Code Approved. White membrane is Energy Star Listed, CRRC Listed and Title 24 Compliant. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 420 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 210 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard® TPO 80 mil thermoplastic single-ply roofing membrane by GAF.

1. Available Stock Colors: White Gray Tan Energy Gray, Energy Tan2. Available Pre-Formulated Colors: Colonial Red, Dark Brown, Dark Bronze, Desert Tan, Electric Blue,

Goldenrod, Ivy Green, Moss Green, Patina Green, Slate Gray, Teal, Terra Cotta, Tropical Green, Smoke Gray, Regal Red Regal Blue Hartford Green

3. Custom colors available

D. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.045 inch (45 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 284

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lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 142 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard® TPO 45 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

E. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.060 inch (60 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 350 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 175 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard® TPO 60 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

F. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.080 inch (80 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 500 sq.ft. of roofing material, 10’ X 50’, weighing 232 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 50’, weighing 116 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard® TPO 80 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

1. Color: White Gray Tan

G. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.050 inch (50 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed and FM Approved. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 271 lbs. EverGuard Extreme® TPO 50 mil thermoplastic single-ply roofing membrane by GAF.

H. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.060 inch (60 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed and FM Approved. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 322 lbs. EverGuard Extreme® TPO 60 mil thermoplastic single-ply roofing membrane by GAF.

I. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.070 inch (70 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed and FM Approved. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 373 lbs. EverGuard Extreme® TPO 70 mil thermoplastic single-ply roofing membrane by GAF.

J. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.080 inch (80 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed and FM Approved. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 420 lbs. EverGuard Extreme® TPO 80 mil thermoplastic single-ply roofing membrane by GAF.

K. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.050 inch (50 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and

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extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 282 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 141 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard Extreme® TPO 50 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

L. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.060 inch (60 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 350 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 175 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard Extreme® TPO 60 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

M. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.070 inch (70 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 500 sq.ft. of roofing material, 10’ X 50’, weighing 189 lbs. Each half sheet roll contains approximately 250 sq.ft. of roofing material, 5’ X 50’, weighing 95 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard Extreme® TPO 70 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

N. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.080 inch (80 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 500 sq.ft. of roofing material, 10’ X 50’, weighing 232 lbs. Each half sheet roll contains approximately 250 sq.ft. of roofing material, 5’ X 50’, weighing 116 lbs. *** Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard Extreme® TPO 80 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

2.09 FLASHING MATERIALS

A. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.045 inch (45 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed, FM Approved, Dade County Product Approval, Florida Building Code Approved. White membrane is Energy Star Listed, CRRC Listed and Title 24 Compliant. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 256 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 142 lbs. EverGuard® TPO 45 mil thermoplastic single-ply roofing membrane by GAF.

B. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.060 inch (60 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed, FM Approved, Dade County Product Approval, Florida Building Code Approved. White membrane is Energy Star Listed, CRRC Listed and Title 24 Compliant. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 322 lbs. Each half sheet roll contains

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approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 162 lbs. EverGuard® TPO 60 mil thermoplastic single-ply roofing membrane by GAF.

C. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.080 inch (80 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed, FM Approved, Dade County Product Approval, Florida Building Code Approved. White membrane is Energy Star Listed, CRRC Listed and Title 24 Compliant. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 420 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 210 lbs. EverGuard® TPO 80 mil thermoplastic single-ply roofing membrane by GAF.

1. Available Stock Colors: White Gray Tan Energy Gray, Energy Tan2. Available Pre-Formulated Colors: Colonial Red, Dark Brown, Dark Bronze, Desert Tan, Electric Blue,

Goldenrod, Ivy Green, Moss Green, Patina Green, Slate Gray, Teal, Terra Cotta, Tropical Green, Smoke Gray, Regal Red Regal Blue Hartford Green

3. Custom colors available

D. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.045 inch (45 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 284 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 142 lbs. EverGuard® TPO 45 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

E. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.060 inch (60 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 350 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 175 lbs. EverGuard® TPO 60 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

F. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.080 inch (80 mil) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 500 sq.ft. of roofing material, 10’ X 50’, weighing 232 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 50’, weighing 116 lbs. EverGuard® TPO 80 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

1. Color: White Gray Tan

G. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.050 inch (50 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed and FM Approved. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 271 lbs. EverGuard Extreme® TPO 50 mil thermoplastic single-ply roofing membrane by GAF.

H. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.060 inch (60 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed and FM Approved. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 322 lbs. EverGuard Extreme® TPO 60 mil thermoplastic single-ply roofing membrane by GAF.

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I. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.070 inch (70 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed and FM Approved. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 373 lbs. EverGuard Extreme® TPO 70 mil thermoplastic single-ply roofing membrane by GAF.

J. A smooth type, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.080 inch (80 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. UL Listed and FM Approved. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 420 lbs. EverGuard Extreme® TPO 80 mil thermoplastic single-ply roofing membrane by GAF.

K. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.050 inch (50 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 282 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 141 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard Extreme® TPO 50 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

L. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.060 inch (60 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 1000 sq.ft. of roofing material, 10’ X 100’, weighing 350 lbs. Each half sheet roll contains approximately 500 sq.ft. of roofing material, 5’ X 100’, weighing 175 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard Extreme® TPO 60 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

M. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.070 inch (70 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 500 sq.ft. of roofing material, 10’ X 50’, weighing 189 lbs. Each half sheet roll contains approximately 250 sq.ft. of roofing material, 5’ X 50’, weighing 95 lbs. Half sheet roll required for roof perimeter use in mechanically attached systems. EverGuard Extreme® TPO 70 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

N. A fleece-backed, polyester scrim reinforced thermoplastic polyolefin membrane with a nominal 0.080 inch (80 mil) thickness, for use as a single ply roofing membrane. Engineered to provide high solar reflectivity and extremely high UV and thermal resistance. These combined characteristics produce a single-ply membrane suitable for the most demanding solar installations as well as any other high heat or solar loading applications. Meets or exceeds the minimum requirements of ASTM D-6878. Each full roll contains approximately 500 sq.ft. of roofing material, 10’ X 50’, weighing 232 lbs. Each half sheet roll contains approximately 250 sq.ft. of roofing material, 5’ X 50’, weighing 116 lbs. *** Half sheet roll required for roof perimeter use in

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mechanically attached systems. EverGuard Extreme® TPO 80 mil Fleece-Back Membrane thermoplastic single-ply roofing membrane by GAF.

2.10 ADHESIVES, SEALANTS and PRIMERS

A. Solvent-based Bonding Adhesive: Solvent based rubberized adhesive for use with EverGuard TPO membranes, EverGuard 1121 Bonding Adhesive, by GAF. ***NOT TO BE USED IN NORTHEAST REGION***

B. Low VOC solvent-based Bonding Adhesive: Solvent based rubberized adhesive for use with EverGuard TPO membranes, EverGuard Low VOC Bonding Adhesive, by GAF.

C. Water-based Bonding Adhesive: Water based rubberized adhesive for use with EverGuard TPO membranes, EverGuard WB181 Bonding Adhesive, by GAF.

D. Two component, low rise polyurethane foam adhesive. VOC free and contains no solvents. Dispensed using the PaceCart, which equally mixes Part A and Part B. Also available as a simple to use cartridge with disposable mixing tip for small jobs. LRF O Adhesive by GAF®.

E. Two component, low rise polyurethane foam adhesive. VOC free and contains no solvents. Dispensed using the Millennium Cyclone and Cyclone II pump, or another suitable low pressure pump which equally mixes Part 1 and Part 2. Also available as a simple to use cartridge with disposable mixing tip for small jobs. LRF M Adhesive by GAF®.

F. CR-20 Adhesive

G. Solvent based liquid, required to protect field cut edges of EverGuard TPO membranes. Applied directly from a squeeze bottle, EverGuard TPO Cut Edge Sealant, by GAF.

H. Solvent based primer for preparing surfaces to receive butyl based adhesive tapes, EverGuard Primer, by GAF. ***NOT TO BE USED IN NORTHEAST REGION***

I. Low VOC solvent based primer for preparing surfaces to receive butyl based adhesive tapes, EverGuard TPO Low VOC Primer, by GAF.

J. Solvent based seam cleaner used to clean exposed or contaminated seam prior to heat welding, EverGuard TPO Seam Cleaner, by GAF.

K. Low VOC TPO cleaner designed to clean exposed or contaminated seams prior to heat welding to remove any residual soap or revitalize aged membranes. Contains only 50 grams per liter of Volatile Organic Content and has been formulated using a blend of primarily VOC-exempt ingredients to be in compliance with air quality regulations for single ply roofing products. EverGuard® CleanWeld® Low VOC Cleaner/Conditioner by GAF®.

L. Solvent based, trowel grade synthetic elastomeric sealant. Durable and UV resistant suitable for use where caulk is typically used. Available in 10 oz. tubes, FlexSeal™ Caulk Grade by GAF.

M. Commercial grade roofing sealant suitable for sealing the upper lip of exposed termination bars and penetrations and around clamping rings and comes with a 20 yr ltd warranty against leaks caused by manufacturing defects. Meets the performance criteria of ASTM D412, ASTM D2196, ASTM D1475 and ASTM D1644, FlexSeal™ Roof Sealant, by GAF.

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N. One part butyl based high viscosity sealant suitable for sealing between flashing membrane and substrate surface behind exposed termination bars and for sealing between roofing membrane and drain flange. EverGuard Water Block, by GAF.

O. 100% solids epoxy based two-part sealant suitable for filling sealant pans at irregularly-shaped penetrations. Epoxy is part A. Polyamide is part B. EverGuard 2-Part Pourable Sealant, by GAF.

P. Asphalt primer: ASTM D 41 Matrix 307 Standard Asphalt Primer, by GAF®.

Q. Insulation Adhesive: Oly-Bond 500™ distributed by GAF®.

R. Insulation Adhesive: Oly-Bond 500™ Spot Shot distributed by GAF®.

S. Insulation Adhesive: Oly-Bond 500™ Green distributed by GAF®.

T. Insulation Adhesive: Oly-Bond 500™ Spot Shot Green distributed by GAF®.

U. Insulation Adhesive: Insta-Stik by Dow Chemical*It is the responsibility of those involved with the design of the building to obtain indemnification for the attachment and integrity of the Insta-Stik Product. GAF assumes no responsibility for the Insta-Stik product or its performance within the system.

2.11 BITUMEN

A. Asphalt bitumen: ASTM D 312 Type III & IV

2.12 BALLAST

A. Stone ballast shall be smooth, water worn gravel with rounded edges and corners, relatively free of sand, loam, and other foreign substances, and contain less than 4% fines. Minimum 3/4”-2 1/2” diameter required.

2.13 PAVERS

A. Extruded polystyrene insulation panels with an integral latex-molded mortar top face. Nominal 2” thick insulated pavers to be provided with tongue and groove interlocking edges.

2.14 PROTECTION PAD / DRAINAGE BOARD ***PLAZA DECK***

A. Drainage board shall have sufficient compressive strength to support the applied live and dead loads.

B. XPS insulation with a minimum 40 psi compressive strength may be used in lieu of the drainage board provided the compressive strength is sufficient to support the applied live and dead loads and the board includes integral drainage channels on its underside.

C. With select surfacing, a protection pad may be used in lieu of a drainage board. 2.15 TRAFFIC SURFACE ***PLAZA DECK***

A. Precast Concrete Pavers with Paver Stands – Precast concrete pavers, typically 24” X 24” or 30” X 30” with a 2” to 3” thickness. Constructed of 5000 to 6000 psi compressive strength concrete, installed on plastic paver stands that are provided with shims or other height adjustment.

2.16 ACCESSORIES

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A. Mechanical Fasteners1. Drill•Tec Standard Screws: Standard duty alloy steel insulation fastener with CR-10 coating with

a .215” diameter thread. Factory Mutual Standard 4470 Approved, #3 Phillips head for use on steel and wood decks.

2. Drill•Tec ASAP 3P Fastener: Assembled screw and 3” locking plastic plate. Alloy steel fastener with CR-10 coating with a .215” diameter thread. Factory Mutual Standard 4470 Approved, #3 Phillips truss head.

3. Drill•Tec ASAP 3S Fastener: Assembled screw and 3” steel plate. Alloy steel fastener with CR-10 coating with a .215” diameter thread. Factory Mutual Standard 4470 Approved, #3 Phillips truss head.

4. Drill•Tec Polymer GypTec Fastener: Glass-filled nylon auger with 1" (25mm) with major thread diameter of .675. To be used with 3" steel plate for insulation and 2" steel plate for single-ply membranes. Miami Dade and Factory Mutual Standard 4470 approved (for insulation attachment)

5. Drill•Tec HD Screws: Heavy gauge alloy steel fastener with CR-10 coating with a .245” diameter thread. Miami Dade and Factory Mutual Standard 4470 Approved, #3 Phillips truss head for use on wood, concrete and steel decks.

6. Drill•Tec XHD Screws: Heavy gauge alloy steel fastener with CR-10 coating with a .275” diameter thread. Factory Mutual Standard 4470 Approved, #3 Phillips truss head for use on heavy steel decks, O.S.B or aluminum roof decks.

7. Drill•Tec SXHD Screws: Heavy gauge alloy steel fastener with CR-10 coating with a .320” diameter thread. Factory Mutual Standard 4470 Approved, #3 Phillips truss head for use on specific FM assemblies on heavy steel decks.

8. Drill•Tec Lite-Deck Fastener: A large diameter reinforced nylon screw with a #3 square drive flat head. Thread diameter of .375” and shank diameter of .312”. Uses a 3" (7.6 cm) Metal Round Plate fastening system.

9. Drill•Tec CR Base Sheet Fastener: G-90 galvanized, CR-10 Corrosion resistant coating with 1.125” x1” head and 1 3/4” (4.4 cm) leg length. Preassembled with 2 3/4” (7 cm) diameter Galvalume steel roof disc.

10. Drill•Tec CR 1.2 Base Sheet Fastener: G-90 galvanized, CR-10 Corrosion resistant coating with 1.125” x1” head and 1.2”leg length. Preassembled with 2 3/4” (7cm) Diameter Galvalume steel roof disc.

11. DrillTec Purlin Fastener: Alloy steel fastener with CR-10 coating with a .210” diameter thread. Factory Mutual Standard 4470 Approved, ¼” hex head. For use when mechanically fastening single-ply membranes in metal-retrofit applications.

12. Nail-Tite Type-R Fasteners: Self-locking one-piece fastener for securing base ply when roofing over existing poured gypsum roof decks. Shank: 1” tapered cone precision formed from corrosion resistant galvanized (G-90) steel. Cap: 1-1/4” round cap formed from corrosion resistant Galvalume (AZ-55) steel, reinforced to resist cupping during driving. The shank is securely wedged to cap forming rigid one-piece fastener, by E. S. Products.

13. Drill•Tec AccuTrac Insulation Plates: Galvalume coated steel 3" square plates recessed or flat bottom. Miami Dade and Factory Mutual Standard 4470 Approved and suitable for use with Drill•Tec standard fasteners, Drill•Tec heavy duty fasteners, Drill•Tec extra heavy duty fasteners. Made for east use with Drill•Tec AccuTrac stand up tool

14. Drill•Tec Accuseam Plates: Galvalume coated steel 3" diameter plates. Miami Dade and Factory Mutual Standard 4470 Approved and suitable for use with Drill•Tec Philips head fasteners and Drill•Tec extra heavy duty fasteners. Made for east use with Drill•Tec AccuTrac stand up tool

15. Drill•Tec Insulation Plates: Galvalume, 3” (7.6 cm) diameter, suitable for use with Drill•Tec Standard and HD screws, and Drill•Tec Spikes. Special design available for use with Drill•Tec Polymer Screws.

16. Drill•Tec XHD Plates: Galvalume, 2 3/8” (6 cm) diameter, with a barbed underside. Suitable for use with Drill•Tec Standard, HD, and XHD Screws, and Drill•Tec Spikes.

17. Drill•Tec SXHD Plates: Galvalume, 2 3/4” (7 cm) diameter, with a double barbed underside. Required for use with Drill•Tec SXHD Screws, HD Screws and Drill•Tec Spikes for specific FM assemblies.

18. Drill•Tec XHD Plates: Galvalume, 2” (5.1 cm) diameter, with a double barbed underside. Suitable for use with Drill•Tec Standard, HD, XHD, and SXHD Screws, and Drill•Tec Spikes.

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19. Drill•Tec Lite-Deck Plate: Galvalume, plate with extra wide diameter designed specifically for Lite-Deck Fastener.

20. DrillTec Locking Impact Nail: Factory Assembled, G-90 Galvalume Coated fastener designed to install base sheets or insulation to gypsum or cementitious wood fiber. 1.8” to 4.8” lengths available with a 2.7” diameter plate

B. Nails & Spikes1. Drill-Tec CD-10: Hammer-in, non-threaded fastener designed to secure insulation and membrane to

structural concrete. Miami Dade and Factory Mutual Standard 4470 approved2. Drill-Tec Spikes: Hammer-in, non-threaded fastener designed to secure insulation and membrane to

structural concrete. Alloy steel fastener with a CR-10 coating and a .250 shank diameter.3. Drill-Tec Masonry Anchor: Zinc alloy anchor with stainless steel or zinc plated steel pin available in

either 1/4" or 3/16" diameter. Designed to attach termination bars to concrete or masonry walls.4. Threaded Cap Nail: Annular-threaded electro-galvanized with yellow di-chromate coating, with 1” (25

mm) round or square cap, as manufactured by the Simplex Nail Corporation.5. Two-Piece Tube Nail: 1” (2.5 cm) diameter cap; when the nail is driven down through the tube of first part

that was installed, the nail hooks up to provide backout resistance, as manufactured by The Simplex Corporation

C. FLASHING ACCESSORIES

1. A smooth type, unreinforced thermoplastic polyolefin based membrane for use as an alternative flashing/reinforcing material for penetrations and corners. Required whenever preformed vent boots cannot be used, available in White, Tan, Gray, Regal Red, Regal Blue, and Hartford Green, 0.055 inches (55 mils) nominal thickness and sheet size: 24in x 50ft. EverGuard TPO Detailing Membrane, by GAF.

2. An 8 inch (20 cm) wide smooth type, polyester scrim reinforced thermoplastic polyolefin membrane strip for use as a cover strip over coated metal and stripping-in coated metal flanges and general repairs: 0.045 inches (45 mils) nominal thickness with 100 foot length, available in White, Tan, Gray, Regal Red, Regal Blue, and Hartford Green EverGuard TPO Flashing Membrane, by GAF.

3. Extruded aluminum termination bar with angled lip caulk receiver and lower leg bulb stiffener. Pre-punched slotted holes at 6” on center or 8” on center. ¾” x 10’ with 0.090” cross section, EverGuard® Lip Termination Bar, by GAF.

4. A 6 inch (14 cm) wide, smooth type, heat-weldable polyester scrim reinforced thermoplastic polyolefin membrane strip. Designed for use as a cover strip over non-coated metal edges and flanges. Each full roll contains approximately 100 Lineal Ft. of material, 6” X 100’. EverGuard TPO Heat-Weld Cover Tape, by GAF.

5. A 6 inch (14 cm) wide, smooth type, polyester scrim reinforced thermoplastic polyolefin membrane strip with a factory laminated butyl tape. Designed for use as a cover strip over non-coated metal edges and flanges. Each full roll contains approximately 100 Lineal Ft. of material, 6” X 100’. EverGuard TPO Cover Tape, by GAF. ***********Take out for 20 yr NDL, this product is only good up to 15 yr NDL**************

6. .045” reinforced TPO membrane with pressure sensitive adhesive, to be installed on horizontal surfaces using plates and fasteners as a base attachment in fully adhered systems. Size 6” x 100’, EverGuard® RTA (Roof Transition Anchor) Strip™, by GAF

7. 24 gauge steel with 0.025” thick TPO based film as required for fabrication into metal gravel stop and drip edge profiles, metal base and curb flashings, sealant pans, and scupper sleeves. Standard sheet size 4’ x 10’, sheet weight 47 lbs. Custom sizes available, EverGuard® TPO Coated Metal, by GAF.

a) Available Stock Colors: White Gray Tan Regal Red Regal Blue Hartford Green

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b) Available Pre-Formulated Colors: Colonial Red, Dark Brown, Dark Bronze, Desert Tan, Electric Blue, Goldenrod, Ivy Green, Moss Green, Patina Green, Slate Gray, Teal, Terra Cotta, Tropical Green, Smoke Gray, Energy Gray, Energy Tan

c) Custom colors available

D. WALL & CURB ACCESSORIES

1. 55 mil TPO membrane and 24 gauge coated metal prefabricated into standard and custom size thru wall scuppers. Available in two sizes: 4" x 6" x 12" (l x w x d) with a 5.75" x 3.75" opening and 8" x 10" x 12" (l x w x d) with a 9.75" x 7.75" opening, EverGuard® TPO Scupper, by GAF

2. .045” thick reinforced TPO membrane fabricated corners. Available in four standard sizes to flash curbs that are 24”, 36”, 48”, and 60” in size. Four corners are required to flash the curb, EverGuard® Corner Curb Wraps, by GAF.

3. 0.045” thick molded TPO membrane outside corners of base and curb flashing. Hot-air welds directly to EverGuard TPO membrane. Size 4” x 4” with 6” flange, EverGuard® TPO Universal Corners by GAF.

4. 0.055” molded TPO membrane inside corners of base and curb flashing. Hot-air welds directly to Everguard TPO membrane. Size 6” x 6” x 5.5” high EverGuard® TPO Preformed Corners by GAF.

5. 8” diameter, nominal .050” vacuum formed unreinforced TPO membrane for use in flashing outside corners of base and curb flashings, EverGuard® TPO Fluted Corner, by GAF.

E. PENETRATION ACCESSORIES

1. 0.075” thick molded TPO membrane sized to accommodate most common pipe and conduits, (1” to 6” diameter pipes), including square tube. Hot-air welded directly to EverGuard TPO membrane, supplied with stainless steel clamping rings, EverGuard® TPO Preformed Vent Boots by GAF.

2. 0.045” thick molded TPO membrane preformed boots are split to accommodate most common pipes and conduits and available in three standard sizes, EverGuard® TPO Split Pipe Boots, by GAF.

3. 0.045” thick molded TPO membrane preformed square boots are split to accommodate most common square penetrations and conduits and available in three standard sizes, EverGuard® TPO Square Tube Wraps, by GAF.

4. .070 thick molded penetration pocket to provide structure and foundation for the application of a pourable sealant for a variety of roof penetrations , weldable and 9" x 6" x 4" (l x w x h) . EverGuard TPO Pourable Sealer Pocket

5. .055” thick smooth type, unreinforced thermoplastic polyolefin membrane designed for use as a conforming membrane seal over T-joints in 60 and 80 mil membrane applications. EverGuard® TPO Drain by GAF

6. Aluminum drain unit coated with a weldable TPO compound. TPO membrane can be heat welded directly to the drain body, resulting in a strong, secure installation. Each drain is fitted with a BlueSeal® mechanical drain seal for a secure, tight seal into the building drain system. Available in two sizes ( 3” and 4”), and custom sizes are available. Everguard® TPO Coated Metal Drain by GAF®

F. ROOF EDGE ACCESSORIES

1. Three piece fascia system with continuous galvanized steel spring cant, exterior decorative snap-on fascia and available in 10 foot lengths in standard or custom colors, EverGuard® Snap-on Fascia by GAF®.

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2. Two piece fascia system with rigid terminator base plate and exterior decorative fascia cover available in 10 foot lengths in standard or custom colors for use with 45 mil and 60 mil only, EverGuard® EZ Fascia by GAF®.

3. Two piece fascia system with rigid extruded terminator base plate and exterior decorative snap-on fascia cover available in 10 foot lengths in standard or custom colors, EverGuard® EZ Fascia EX by GAF®.

a) Standard Colors: Statuary Bronze Mission Red Forest Green Slate Blue Concord Cream Black Patina Green Mint Green Redwood Dove Gray Rocky Gray Bone White Siam Blue Rawhide Regal Blue Hartford Green Medium Bronze Chocolate Brown Turquoise Boysenberry Sandstone Ascot White Shale Gray Sierra tan

b) Custom colors available

G. FIELD OF ROOF ACCESSORIES

1. Pre-manufactured expansion joint covers used to bridge expansion joint openings in a roof structure. Fabricated to accommodate all roof to wall and roof to roof applications, made of .060” reinforced TPO membrane, available in 5 standard sizes for expansion joint openings up to 8” wide. EverGuard® TPO Expansion Joint Covers, by GAF

2. .055” thick smooth type, unreinforced thermoplastic polyolefin membrane designed for use as a conforming membrane seal over T-joints in 60 and 80 mil membrane applications. EverGuard T-Joint Patches, by GAF.

3. 1/8” thick extruded and embossed TPO roll 34” x 50’, heat welds directly to roofing membrane. Unique herringbone traction surface. Available in gray or yellow, EverGuard® TPO Walkway Rolls, GAF.

*** Fully Adhered and Mechanically attached systems only*****4. 1.5” wide x 1.25” high x 10’ length profiles with pressure sensitive adhesive. Applied to the TPO roofing

systems to simulate standing seam metal roof, EverGuard® TPO Standing Seam Profile, by GAF.

*** Fully Adhered and Mechanically attached systems only*****5. 1.5” wide x 1.25” high x 10’ length profiles with pressure sensitive adhesive. Applied to the TPO roofing

systems to simulate batten seam metal roof, EverGuard® TPO Batten Seam Profile, by GAF.

2.17 LIQUID FLASHING MEMBRANE

A. VOC compliant, solvent based thermoplastic liquid to be applied to new or aged EverGuard® TPO membranes where adhesion of TOPCOAT® Matrix™ MajorSeal™ Liquid Flashing is desired. TOPCOAT® TPO Primer, by GAF®

B. VOC compliant, one part, moisture curing polyether sealant designed to waterproof difficult flashing conditions. Used in conjunction with TOPCOAT® Flashing Fabric to form a durable, redundant flashing membrane. Each kit contains 3 - .53 gallon (2 liter) pouches of Topcoat® Matrix™ Liquid Flashing, 2 – 10.1 oz (.30 liter) tubes of M-Bond sealant, 1 pair of disposable gloves and 1 notched trowel /wet mil gauge. Each kit weighs 24 lbs (10.89 KG). TOPCOAT® Matrix™ MajorSeal™ Liquid Flashing, by GAF®

C. A stitch-bond, 100% polyester web used in a variety of roofing installations and repairs. TOPCOAT® Flashing Fabric by GAF®

D. Additional accessories need for installation:

1. Isopropyl Alcohol

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2. Natural fiber (china bristle) brush3. Masking tape4. Rags5. Tape measure6. Scissors

PART 3 EXECUTION

3.01 EXAMINATION

A. Verify that the surfaces and site conditions are ready to receive work.

B. Verify that the deck is supported and secured.

C. Verify that the deck is clean and smooth, free of depressions, waves, or projections, and properly sloped to drains, valleys, eaves, scuppers or gutters.

D. Verify that the deck surfaces are dry and free of ice or snow.

E. Verify that all roof openings or penetrations through the roof are solidly set, and that all flashings are tapered.

3.02 SUBSTRATE PREPARATION

A. Steel Deck1. Metal decks must be a minimum uncoated thickness of 22 gauge (0.8 mm) and shall have a G-90

galvanized finish on all panels. FM requirements may supersede those set forth in this section. Consult the current FM Guide for more information.

2. Decks must comply with the gauge and span requirements in the current Factory Mutual FM Approval Guide and be installed in accordance with Loss Prevention Data Sheet 1-28 or specific FM approval.

3. When re-roofing over steel decks, surface corrosion shall be removed, and repairs to severely corroded areas made. Loose or inadequately secured decking shall be fastened, and irreparable or otherwise defective decking shall be replaced.

B. Structural Concrete Deck1. Minimum deck thickness for structural concrete is 4” (10.2 cm).2. Only poured in place concrete decks that provide bottom side drying are acceptable. Decks that are

installed over non-vented metal decks or pans that remain in place may trap moisture in the deck beneath the roof system and are not acceptable.

3. The roof deck shall be properly cured prior to application of the roofing system; twenty-eight (28) days is normally required for proper curing. Curing agents must be checked for compatibility with roofing materials. Prior to the installation of the roof assemblies, GAF recommends the evaluation of the surface moisture and deck’s dryness through the use of ASTM D-4263 or hot bitumen test.

4. The deck must be smooth, level and cannot be wet or frozen. If deck is determined to be wet, it must be allowed to dry.

5. Treat cracks greater than 1/8” (3 mm) in width in accordance with the deck manufacturer’s recommendations.

6. Sumps for the roof drains shall be provided in the casting of the deck.7. When insulation or roofing is to be adhered with hot asphalt, prime the deck with asphalt/concrete primer,

ASTM D 41 at the rate of one gallon per 100 square feet (0.4 L/m2). Allow the primer to dry prior to the application of the roofing system.

8. In all retrofit roof applications, it is required that deck be inspected for defects. Any defects are to be corrected per the deck manufacturer’s recommendations prior to the new roof application.

C. Precast Concrete Decks

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1. Precast concrete decks are usually manufactured as planks or slabs and constructed of steel reinforced Portland cement and solid aggregate; often they are made with hollow cores to minimize their weight.

2. It is the responsibility of the engineer, architect, building owner or the roofing contractor to determine the fitness of a deck for direct membrane application to a concrete deck.3. If the deck is determined to be wet, it must be allowed to dry.4. All deformed panels must be replaced.5. Joints must be filled with a masonry grout to correct imperfections between slabs and feathered to provide

a slope not greater than 1/4 “ per foot (2.1 cm/m), for non-insulated assemblies or 1/8” per foot (1.0 cm/m) for insulated assemblies.

6. Fill depressions with masonry grout and treat cracks greater than 1/8”(3 mm) width in accordance with the deck manufacturer’s recommendations.

7. If the joints cannot be grouted and finished smooth, then a leveling course of lightweight insulating concrete (minimum 2” (5.1 cm) thickness) must be applied. Do not seal joints between the slabs; leave open to permit venting and drying of roof fill from below.

8. When applying roofing or insulation directly to the deck with asphalt, prime with asphalt/concrete primer, ASTM D41, at a rate of 1 gal/square (.4 L/m2) and allow the primer to dry prior to the application of the roofing system. Hold back bitumen at the joints approximately 4”(10.2 cm)to prevent bitumen drippage.

D. Wood Deck (Plank / Heavy Timber)1. Wood boards must be at least 1” nominal thickness and have a nominal width of 4’-6”. Tongue and groove

or shiplap lumber is preferred to square edge material since subsequent shrinkage or warping of square edge planks may cause ridging of the roof system above adjacent boards.

2. All boards must have a bearing on rafters at each end and be securely nailed.3. Lumber shall be kiln dried.4. Preservatives or fire retardants used to treat decking must be compatible with roofing materials.5. Decking shall be kept dry and roofed promptly after installation.6. Knotholes or large cracks in excess of ¼” (6 mm) shall be covered with securely nailed sheet metal.7. In all retrofit roof applications, it is required that deck be inspected for defects. Any defects are to be

corrected per the deck manufacturer’s recommendations and standards of the APA/Engineered Wood Association prior to new roof application.

E. Plywood Deck 1. Plywood sheathing must be exterior grade, minimum 4 ply, and not less than 15/32” (12 mm) 19/32” (dade

county) thick .2. Preservatives or fire retardants used to treat the decking must be compatible with roofing materials.3. The deck must be installed over joists that are spaced 24” (61 cm) o.c. or less.4. The deck must be installed so that all four sides of each panel bear on and are secured to joist and cross

blocking. “H” clips are not acceptable.5. Panels must be installed with a 1/8” to 1/4” (3mm – 6mm) gap between panels and must match vertically at

joints to within 1/8” (3mm).6. Decking should be kept dry and roofed promptly after installation.

F. Oriented Strand Board (OSB) Deck1. Oriented Strand Board must carry a Structural 1 rating if it is to be used as a decking material.2. Preservatives or fire retardants used to treat decking must be compatible with roofing materials.3. The deck must be installed over joists that are spaced 24” (61 cm) o.c. or less.4. The deck must be installed so that all four sides of each panel bear on and are secured to joist and cross

blocking; the APA/Engineered Wood Association (APA) recommendations. “H” clips are not acceptable.5. Panels must be installed with a 1/8” to 1/4” (3mm – 6mm) gap between panels and must match vertically at

joints to within (1/8” (3mm).6. Decking should be kept dry and roofed promptly after installation.

G. Lightweight Insulating Concrete Deck

Rev 07 /13

07540-21


1. Lightweight insulating concrete decks are required to have a minimum thickness of 2” (5.1 cm), a minimum compressive strength of 125 psi (87,000 kg/m²) and a minimum density of 22 pcf (352 kg/m²). Individual deck manufacturer’s standards apply when their specifications exceed the minimum thickness, compressive strength, or density requirements.

2. The lightweight insulating deck/fill must be installed by an applicator approved by the deck manufacturer.3. The roof system shall be installed immediately following deck curing to prevent damage from exposure to

precipitation. The deck manufacturer determines the minimum curing time and maximum exposure limitations.

4. LWIC should not be poured during rainy periods. Deck areas that have frozen before they have cured must be removed and replaced. Decks which receive precipitation prior to installation of the roof membrane must be checked for moisture content and dryness.

5. The moisture content of existing LWIC must be under 20% when insulation is to be fastened directly to it. Where moisture content exceeds 20%, a layer of Stratavent Eliminator Venting Base Sheet must be installed prior to the insulation.

6. Where the mean January temperature (Reference current ASHRAE Fundamentals Handbook) is below 40 F (4.4C), lightweight insulating concrete decks must be poured and roofed between April 1st and October 31st; This type of deck is unacceptable in Alaska.

7. Lightweight insulating concrete decks are acceptable only on slopes up to 1” per foot (8.3 cm/m).

H. Cementitious Wood Fiber1. Decks must be protected from the weather during storage and application; any wet or deformed decking

should be removed and replaced.2. Cementitious wood fiber decks should not be installed over high humidity occupancies.3. Cementitious wood fiber decks must have a minimum design load as recommended by the manufacturer.4. All cementitious wood fiber deck panels must be anchored against uplift and lateral movement.5. The deck must be installed level. Any deflection, irregularities, or otherwise damaged panels must be

corrected or replaced.

I. Gypsum1. Gypsum decks must be smooth and free from deflections or ridges.2. When installing base sheet fasteners, an average fastener withdrawal resistance as recommended by the

fastener manufacturer must be obtained; however, at no time shall it be less than 40 lbs. (178 N) per fastener.

3. Wet or frozen poured gypsum decks are not suitable to receive a roof.4. Poured-in-place gypsum roof decks contain a large percentage of moisture. All necessary precautions must

be taken to avoid the entrapment of moisture under the roofing system. In addition to ventilation of the underside to allow for proper curing, topside and perimeter venting shall be implemented.

J. Recover1. Suitable roofs for recover shall be free of dust, dirt, debris, and any contaminants that may adversely affect

the performance of the new roof. Areas of substantial deck deflection or membrane imperfections shall be corrected prior to installing any new roofing.

2. For recover installations over single-ply, fluid applied, coal tar and metal roofs, contact GAF Contractor Services for prior approval and technical requirements.

3. Taking test cuts to verify the existing roof construction and condition. Three test cuts should be made for roofs under 100 squares and one test cut per 100 squares above the minimum amount. It is highly recommended and in certain circumstances, required, that a moisture survey be made to determine the extent of wet insulation and moisture entrapment. Contact GAF Contractor Services for more information on moisture surveys.

4. Existing substrates and insulation (if applicable) must be dry over the majority of the roof area. Wet or deteriorated areas of insulation and substrate must be removed and replaced with new materials. When adhering insulation or new roofing directly to the existing roof surface, the existing roof system components must be well attached to each other and their substrate.

5. All applicable code requirements must be met for recover over an existing roofing system.

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07540-22


6. GAF does not recommend partial recover or re-roofing of a single roof area due to the potential for defects in the portion of the roof system not replaced or negatively affecting the performance of the new membrane. When required by project conditions or budget considerations, GAF requires full separation of the old and new roof areas by means of a full curb mounted expansion joint or area divider installed to provide a complete watertight seal or break between areas. Tie-in constructions, in which the old and new membranes are adhered directly to each other and stripped in are not acceptable for coverage under certain guarantees.

3.03 INSTALLATION - GENERAL

A. Install GAF’s EverGuard® TPO roofing system according to all current application requirements in addition to those listed in this section.

B. GAF EverGuard® TPO Specification #: ______________

C. Start the application of membrane plies at the low point of the roof or at the drains, so that the flow of water is over or parallel to, but never against the laps.

3.04 BITUMEN HANDLING

A. Do not mix different types of asphalt.

B. Use only ASTM D 312, Type III or Type IV Steep Asphalt. Type III asphalt may be used on slopes up to ½” per foot (4cm/m). Type IV asphalt must be used on all slopes greater than ½” per foot (4 cm/m).

C. Application with hot asphalt requires continuous, uniform interply mopping rates of 25 lbs. +/- 20% per 100

square feet of roof area (1.2 kg/m²).

D. Application temperature of the asphalt must be at the Equiviscous Temperature (EVT) with a tolerance of +/- 25°F (13.9°C), at which a viscosity of 125 centipoise is attained. When using mechanical asphalt applicators, the target viscosity should be 75 centipoise.

E. For all SBS modified asphalt flashings; the minimum application temperature of the asphalt must be at the EVT or 425°F (218°C), whichever is greater, with a rolling bank (puddle) of mopping asphalt across the full width of the roll.

F. Do not heat the asphalt to or above its flash point or hold the asphalt at temperatures above the finished blowing temperature for more than 4 hours.

G. Do not keep heated tankers above 325°F (163°C) overnight.

3.05 SELF ADHERING VAPOR RETARDER INSTALLATION

A. General:

1. Install only when the outside temperature is 45°F (7°C) and rising. In cool weather, membrane rolls and adhesives must be stored overnight at a minimum temperature of 55°F (12.8°C) prior to their application. Remove all rolls from the heated storage only as they are being installed. Install membrane rolls immediately after removal from storage to avoid membrane cooling. Leak barrier rolls must be at least 45°F (7.2°C) at time of application.

2. Make sure the surface is clean, dry, and free of sharp edges. Any ice, dew, water, debris, dirt, oil, grease, or other contaminants will interfere with adhesion and may lead to a leak.

Rev 07 /13

07540-23


3. Leave the release liner in place until you are ready to adhere the vapor retarder to the deck.

4. Do not use UnderRoof® HT or UnderRoof® 2 self adhering vapor retarders as a temporary roof in low slope applications.

5. After installation of self adhering vapor retarder, seal all roof edges and penetrations to retard moisture vapor migration at these locations. If UnderRoof® HT or UnderRoof®2 Leak Barrier is to be adhered to concrete or metal surfaces, the surfaces must be primed with ASTM D41 primer and allowed to dry. Firmly roll the sheet with a silicone-coated roller to ensure adhesion.

B. Field sheet installation (first course):

1. Start at the low point or drains so that the flow of water is over or parallel to the laps, but never against the laps. To aid in handling and sheet alignment and to minimize wrinkling, the membrane may be cut into a workable length (approx. 10’ to 20’). Install the sheets perpendicular to the slope. Fold the membrane over lengthwise and remove the release liner from half the sheet and roll in the sheet.

2. Proceed to the other half of the first sheet. Fold over the other half of the sheet lengthwise. Use care to keep the sheet straight.

3. Peel the release film from this half of the sheet. It peels easiest when pulled at a 45° angle along the length of the sheet. Avoid touching the adhesive as you remove the film, as it is very aggressive.

4. Roll in this half of the membrane keeping the sheet rounded as it adheres to the substrate. Once the entire sheet is installed, roll the sheet with a weighted roller to assure proper adhesion

5. Work carefully….if the membrane runs off of the proper alignment by more than ¼” (6mm), cut and restart the membrane installation.

6. End laps – UnderRoof® HT: align the new sheet so that it overlaps the previous sheet 6”. Remove the release film and firmly roll the end lap with a silicone coated hand roller to ensure sealing.

7. End laps – UnderRoof® 2: align the new sheet so that it overlaps the previous sheet 6”. At the overlap, fold the sheet back to a point 12” from the end of the roll. Score the release liner, leaving the 12” section in place. Be sure to score the release liner of the selvage edge at the same point. Install the balance of the membrane as you normally would. Return to the end lap area and fold back that portion of the membrane where the release liner is still in place. Apply TOPCOAT® Matrix™ MajorBond™ Flashing Cement or TOPCOAT® Matrix™ 201 Premium SBS Flashing Cement in the 6” area of the bottom sheet forming the end lap. Trowel to an even thickness approx. 1/16” to 1/8” thick. To complete the end lap, remove the release film from the back of the top sheet, the 12” piece left in place in the previous step. Set the top sheet into adhesive and firmly roll the sheet with a silicone-coated roller to ensure sealing.

C. Field sheet installation (subsequent courses):1. Position subsequent courses using the selvage edge line to align the membrane. UnderRoof® HT Leak

Barrier requires a minimum 3” side lap, UnderRoof® 2 Leak Barrier requires a minimum 4” side lap.2. Be sure to firmly roll the lap area with a silicone-coated hand roller at the end to ensure sealing.

3.06 INSULATION - GENERAL

A. Do not apply roof insulation or roofing until all other work trades have completed jobs that require them to traverse the deck on foot or with equipment. A vapor retarder coated lightly with asphalt may be applied to protect the inside of the structure prior to the insulation and final roofing installation. Before the application of the insulation, any damage or deterioration to the vapor retarder must be repaired.

B. Do not install wet, damaged or warped insulation boards.

C. Install insulation boards with staggered board joints in one direction (unless taping joint).

D. Install insulation boards snug. Gaps between board joints must not exceed ¼” (6 mm). All gaps in excess of ¼” (6 mm) must be filled with like insulation material.

Rev 07 /13

07540-24


E. Wood nailers must be 3-1/2” (8.9 cm) minimum width or 1” (25 mm) wider than metal flange. They shall be of equal thickness as the insulation, and be treated for rot resistance. All nailers must be securely fastened to the deck.

F. Do not kick insulation boards into place.

G. Miter and fill the edges of the insulation boards at ridges, valleys and other changes in plane to prevent open joints or irregular surfaces. Avoid breaking or crushing of the insulation at the corners.

H. Insulation should not be installed over new lightweight insulating concrete.

I. Roof tape, if required over insulation joints, must be laid evenly, smoothly and embedded in a uniform coating of hot steep asphalt with 4” (10.2 cm) end laps. Care must be taken to assure smooth application of tape, and full embedment of the tape in the asphalt.

J. Do not install any more insulation than will be completely waterproofed each day.

3.07 INSULATION – BASE LAYER***Mechanically attached***

***Mechanically Attached System***A. The insulation must be securely attached to the roof deck. A minimum FMRC 1-60 attachment is

recommended. Refer to FMRC Approval Guide for FM fastening patterns.

***Fully Adhered System*****B. The insulation must be securely attached to the roof deck. A minimum FMRC 1-60 attachment is

recommended. Refer to FMRC Approval Guide for FM fastening patterns. Factory Mutual requires fastener density increased in corner areas for FM 1-60 as well as perimeter and corner area fastener density increases for FM 1-90 or greater. Refer to FM Loss Prevention Data Sheets 1-7, 1-28, and 1-49.

C. Use only fasteners with a minimum 3 inch (7.6 cm) stress plate when mechanically attaching insulation. Do not attach insulation with nails.

***Asphalt Adhered***D. Install insulation layers, maximum 4’ x 4’ (1.22m x 1.22m) board size, in a full and uniform mopping of hot

asphalt applied at the rate of 25 lbs./square (1.2 kg/m2) ±20%. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6” (15.2 cm) to eliminate continuous vertical gaps.

***OlyBond 500***A. The substrate must be free of and debris, dust, dirt, oil, grease, and standing water before applying the

adhesive.

B. OlyBond 500 must be applied using the specially designed PaceCart dispenser. OlyBond 500 SpotShot shall be applied using one of the specially designed dual cartridge dispensers.

C. Install insulation layers applied with bands of Oly Bond 500 spaced 12” O.C. Approximate coverage rate is ½ to 1 gallon per 100 square feet, depending on the substrate. Allow the foam to rise ¾” to 1”. Walk each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6” (15.2 cm) to eliminate continuous vertical gaps.

***CR-20***A. The substrate must be free of and debris, dust, dirt, oil, grease, and standing water before applying the

adhesive.

B. Install insulation layers applied with rows of CR-20 spaced 12” O.C. Insulation boards are to be placed immedieately on the wet adhesive but not walked into place or compressed into the adhesive until the CR-20

Rev 07 /13

07540-25


has begun to thicken and started to develop its initial bond. After the adhesive has attained its initial bond strength the boards can be “walked-in” and will be compressed to the deck or substrate exhibiting minimal slippage or movement. The boards should be exposed to minimum traffic for at least 10-20 minutes after they have been “walked-in-place” to avoid breaking the freshly formed bond.

C. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6” (15.2 cm) to eliminate continuous vertical gaps.

***LRF-M Adhesive***D. Typically, space ½” wide beads, 12” o.c., in a ribbon pattern to achieve proper coverage rates for insulation

attachment. As adhesive is applied, immediately place 4’x4’ insulation board into wet adhesive. Do not allow the adhesive to skin over. Eliminate un-even surfaces to ensure positive contact between the insulation board and substrate.

***Insta-Stik***D. The substrate must be free of debris, dust, dirt, oil, grease, and standing water before applying the adhesive.

E. Install insulation layers applied with 3/4” beads of Insta-Stik spaced 12” o.c. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6” (15.2 cm) to eliminate continuous vertical gaps.

***Loose Laid***F. Loose apply the base layer of insulation for subsequent layers to be simultaneously attached or for ballast

applications. Minimal fastening should be performed to avoid movement of the boards.***Flute Filler***

G. Fill all flutes with a loose applied base layer of insulation. Insulation must be of equal height as metal ribs, seams or flutes to allow for subsequent layers to be applied without interference. Minimal fastening should be performed to avoid movement of the boards.

H. If subsequent layers of insulation are to be attached with insulation adhesive, the base layer must be mechanically attached with a minimum fastener density of 1 fastener every 2 square feet.

3.08 INSULATION – SUBSEQUENT LAYERS***Mechanically attached***

***Mechanically Attached System***A. The insulation must be securely attached to the roof deck. A minimum FMRC 1-60 attachment is

recommended. Refer to FMRC Approval Guide for FM fastening patterns.

***Fully Adhered System*****B. The insulation must be securely attached to the roof deck. A minimum FMRC 1-60 attachment is

recommended. Refer to FMRC Approval Guide for FM fastening patterns. Factory Mutual requires fastener density increased in corner areas for FM 1-60 as well as perimeter and corner area fastener density increases for FM 1-90 or greater. Refer to FM Loss Prevention Data Sheets 1-7, 1-28, and 1-49.

C. Multiple layers of insulation of the same, non-tapered insulation material may be simultaneously mechanically fastened with approved fasteners and plates through the top layer of insulation to the structural deck. Individual layers of insulation must not exceed 3” (7.6 mm) in thickness nor total thickness of all layers should not exceed 5” (12.7 cm) without written approval of GAF Contractor Services. FM Type attachments may differ

D. Use only fasteners with a minimum 3 inch (7.6 cm) stress plate when mechanically attaching insulation. Do not attach insulation with nails.

***Asphalt Adhered***E. Install insulation layers, maximum 4’ x 4’ (1.22m x 1.22m) board size, in a full and uniform mopping of hot

asphalt applied at the rate of 25 lbs./square (1.2 kg/m2) ±20%. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6” (15.2 cm) to eliminate continuous vertical gaps.

***OlyBond 500***

Rev 07 /13

07540-26


E. The substrate must be free of and debris, dust, dirt, oil, grease, and standing water before applying the adhesive.

F. OlyBond 500 must be applied using the specially designed PaceCart dispenser. OlyBond 500 SpotShot shall be applied using one of the specially designed dual cartridge dispensers.

G. Install insulation layers applied with bands of Oly Bond 500 spaced 12” O.C. Approximate coverage rate is ½ to 1 gallon per 100 square feet, depending on the substrate. Allow the foam to rise ¾” to 1”. Walk each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6” (15.2 cm) to eliminate continuous vertical gaps.

***CR-20***A. The substrate must be free of and debris, dust, dirt, oil, grease, and standing water before applying the

adhesive.

B. Install insulation layers applied with rows of CR-20 spaced 12” O.C. Insulation boards are to be placed immedieately on the wet adhesive but not walked into place or compressed into the adhesive until the CR-20 has begun to thicken and started to develop its initial bond. After the adhesive has attained its initial bond strength the boards can be “walked-in” and will be compressed to the deck or substrate exhibiting minimal slippage or movement. The boards should be exposed to minimum traffic for at least 10-20 minutes after they have been “walked-in-place” to avoid breaking the freshly formed bond.

C. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6” (15.2 cm) to eliminate continuous vertical gaps.

***LRF-M Adhesive***H. Typically, space ½” wide beads, 12” o.c., in a ribbon pattern to achieve proper coverage rates for insulation

attachment. As adhesive is applied, immediately place 4’x4’ insulation board into wet adhesive. Do not allow the adhesive to skin over. Eliminate un-even surfaces to ensure positive contact between the insulation board and substrate.

***Insta-Stik***F. The substrate must be free of debris, dust, dirt, oil, grease, and standing water before applying the adhesive.

G. Install insulation layers applied with 3/4” beads of Insta-Stik spaced 12” o.c. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6” (15.2 cm) to eliminate continuous vertical gaps.

H. Do not install any more insulation than will be completely waterproofed each day.

3.09 PROTECTION LAYER

A. GENERAL1. Polymat protection layer shall be installed between the roofing membrane and the substrate.2. Fire sheet 50 or 10 fiberglass sheet protection layer shall typically be installed when required by design

professionals or code authority to address code or approval requirements or as a separator layer.

B. APPLICATION 1. Install fiberglass sheet or polymat protection layer loose-applied over substrate surface so that wrinkles and

buckles are not formed.2. Overlap sheets a minimum of 6" for side and end laps.

C. VERSASHIELD SOLO APPLICATION 1. Install VersaShield Solo loose-applied over substrate surface so that wrinkles and buckles are not formed

perpendicular to the direction of the TPO membrane.2. Overlap membrane a minimum 2 " at the side laps and minimum 4" at the end laps.

Rev 07 /13

07540-27


3. Use corrosive resistant nails with 1" diameter metal head or plastic caps to fasten in place. Only use enough fasteners to hold in place until primary roof covering is in place.

4. Do not install more VersaShield Solo than can be covered in one day.

3.10 MEMBRANE APPLICATION

A. Fully Adhered:1. Place membrane so that wrinkles and buckles are not formed. Any wrinkles or buckles must be removed

from the sheet prior to permanent attachment. Roof membrane shall be fully adhered immediately after it is rolled out, followed by welding to adjacent sheets.

2. Overlap roof membrane a minimum of 3” (15 cm) for side laps and 3” (15 cm) for end laps.3. Install membrane so that the side laps run across the roof slope lapped towards drainage points.4. All exposed sheet corners shall be rounded a minimum of 1”.5. Use full width rolls in the field and perimeter region of roof.6. Use appropriate bonding adhesive for substrate surface, applied with a solvent-resistant roller, brush or

squeegee.7. Apply bonding adhesive at 3 squares of finished, mated surface area per 5 gallons (Solvent Based), 6

squares of finished, mated surface area per 5 gallons (Low VOC) or 7 squares of finished, mated surface area per 5 gallons (water based). A greater quantity of bonding adhesive may be required based upon the substrate surface condition.

**************WB181 Fleece Back only************8. Apply bonding adhesive to the substrate surface only at 600 square feet per 5 gallons (Water Based). A

greater quantity of bonding adhesive may be required based upon the substrate surface condition.

*****LRF M Adhesive Application- Fleece Back only*****9. Apply LRF M adhesive directly to substrate using a ribbon pattern. Space beads as required by job

specification, typically 6” or 12” o.c. GAF LRF M Adhesive should be approximately 70°F (22°C) when being dispensed. As adhesive is applied, allow the adhesive to begin rising, then place membrane. Roll in membrane with a 150 lb membrane roller or equivalent.

*****LRF O Adhesive Application- Fleece Back only*****10. Apply LRF O adhesive directly to substrate using a ribbon pattern. Space beads as required by job

specification, typically 6” or 12” o.c. GAF LRF O Adhesive should be approximately 70°F (22°C) when being dispensed. As adhesive is applied, allow the adhesive to begin rising, then place membrane. Roll in membrane with a 150 lb membrane roller or equivalent.

11. Apply CR-20 Adhesive in a “spatter pattern” onto the substrate by dispensing the adhesive in a spray pattern similar to the action required when hand watering a flower bed, applied at a rate of 3.75 lb/sq. and rolled in with a 150 lb. weighted roller. The spatter pattern should yield a heavily textured, even coating of approximately ¾” to 1/2” nominal thickness height on the peaks of the spattered adhesive.

12. Prevent seam contamination by keeping the adhesive application a few inches back from the seam area.13. Adhere approximately one half of the membrane sheet at a time. One half of the sheet’s length shall be

folded back in turn to allow for adhesive application. Lay membrane into adhesive once the bonding adhesive is tacky to the touch.

14. Roll membrane with a weighted roller to ensure complete bonding between adhesive and membrane.15. Membrane laps shall be heat-welded together. All welds shall be continuous, without voids or partial

welds. Welds shall be free of burns and scorch marks.16. Weld shall be a minimum of 1-1/2” in width for automatic machine welding and a minimum 2” in width

for hand welding.17. All cut edges of reinforced membrane must be sealed with EverGuard TPO Cut Edge Sealant.18. Supplemental membrane attachment is required at the base of all walls and curbs, and where the angle of

the substrate changes by more than five (5) degrees (1” in 12”). Roofing membrane shall be secured to the structural deck with appropriate Drill-Tec screws and plates spaced every 12” o.c. The screws and

Rev 07 /13

07540-28


plates must be installed no less than ½” from the membrane edge. Alternatively, the roofing membrane may be turned up the vertical plane a minimum of 3” and secured with screws and termination bar Fastener spacing is the same as is used for in-lap attachment. The termination bar must be installed within 1-1/2” to 2” of the plane of the roof membrane, with a minimum of 1” of membrane extending above the termination bar.

19. Supplemental membrane attachment to the structural deck is required at all penetrations unless the insulation substrate is fully adhered to the deck. Roofing membrane shall be secured to the deck with appropriate Drill-Tec screws and plates.

20. Fasteners must be installed to achieve the proper embedment depth. Install fasteners without lean or tilt.21. Install fasteners so that the plate or termination bar is drawn down tightly to the membrane surface.

Properly installed fasteners will not allow the plate or termination bar to move (underdriving), but will not cause wrinkling of the membrane (overdriving).

B. Fully Adhered:1. Place membrane so that wrinkles and buckles are not formed. Any wrinkles or buckles must be removed

from the sheet prior to permanent attachment. Roof membrane shall be fully adhered immediately after it is rolled out, followed by welding to adjacent sheets.

2. Overlap roof membrane a minimum of 3” (15 cm) for side laps and 3” (15 cm) for end laps.3. Install membrane so that the side laps run across the roof slope lapped towards drainage points.4. All exposed sheet corners shall be rounded a minimum of 1”.5. Use full width rolls in the field and perimeter region of roof.6. Fully adhere membrane sheets to the substrate with hot roofing asphalt at a rate of 25 lbs per 100 square

feet. 7. Prevent seam contamination by keeping the asphalt application a few inches back from the seam area.8. Adhere approximately one half of the membrane sheet at a time. One half of the sheet’s length shall be

folded back in turn to allow for asphalt application. Lay membrane into asphalt immediately after application.

9. Roll membrane with a weighted roller to ensure complete bonding between asphalt and membrane.10. Membrane laps shall be hot-air-welded together. All welds shall be continuous, without voids or partial


for hand welding.12. All cut edges of reinforced membrane must be sealed with EverGuard TPO Cut Edge Sealant.13. Supplemental membrane attachment is required at the base of all walls and curbs, and where the angle of

the substrate changes by more than five (5) degrees (1” in 12”). Roofing membrane shall be secured to the structural deck with appropriate Drill-Tec screws and plates spaced every 12” o.c. The screws and plates must be installed no less than ½” from the membrane edge. Alternatively, the roofing membrane may be turned up the vertical plane a minimum of 3” and secured with screws and termination bar Fastener spacing is the same as is used for in-lap attachment. The termination bar must be installed within 1-1/2” to 2” of the plane of the roof membrane, with a minimum of 1” of membrane extending above the termination bar.

14. Supplemental membrane attachment to the structural deck is required at all penetrations unless the insulation substrate is fully adhered to the deck. Roofing membrane shall be secured to the deck with appropriate Drill-Tec screws and plates.



C. Mechanically Attached:1. Place membrane so that wrinkles and buckles are not formed. Any wrinkles or buckles must be removed

from the sheet prior to permanent attachment. Roof membrane shall be mechanically fastened immediately after it is rolled out, followed by welding to adjacent sheets.

2. Overlap roof membrane a minimum of 6” for side laps and 3” for end laps.

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3. Install membrane so that the side laps run across the roof slope lapped towards drainage points.4. All exposed sheet corners shall be rounded a minimum of 1”.5. Use full width rolls in the field of roof and half width rolls in the perimeter and corner region of the roof

and mechanically fastened in the side lap area to the roof deck.6. Membrane laps shall be heat-welded together. All welds shall be continuous, without voids or partial


for hand welding.8. All cut edges of reinforced membrane must be sealed with EverGuard TPO Cut Edge Sealant.9. The membrane shall be mechanically fastened in the side lap area to the roof deck with appropriate Drill-

Tec fasteners and plates as required by roof system specification and/or Factory Mutual classification requirements.

10. The metal plates must be placed within ¼” to ½” of the membrane edge. Plates shall not be placed less than ¼” from the membrane edge.

11. In the corner regions, additional fasteners shall be installed through the perimeter membrane to form a grid pattern, with an 8” (40.5 cm) wide EverGuard TPO reinforced membrane flashing-strip welded over the additional fasteners. Corners include both outside and inside corners that measure 75 - 105 angle degrees.

12. Membrane attachment to the roof deck is required at locations of deck angle changes in excess of five (5) angle degrees (1” in 12”).

13. Supplemental membrane attachment is required at the base of all walls and curbs, and where the angle of the substrate changes by more than ten (10) degrees (1” in 12”). Roofing membrane shall be secured to the structural deck with screws and plates of the same type and spacing used for in-lap attachment. The screws and plates must be installed no less than ½” from the membrane edge. Alternatively, the roofing membrane may be turned up the vertical plane a minimum of 3” and secured with screws and termination bar Fastener spacing is the same as is used for in-lap attachment. The termination bar must be installed within 1-1/2” to 2” of the plane of the roof membrane, with a minimum of 1” of membrane extending above the termination bar.

14. Supplemental membrane attachment to the structural deck is required at all penetrations. Roofing membrane shall be secured to the deck with appropriate Drill-Tec screws and plates.



D. Ballast Applied:1. Place membrane so that wrinkles and buckles are not formed. Any wrinkles or buckles must be removed

from the sheet prior to permanent attachment. Roof membrane shall be mechanically fastened immediately after it is rolled out, followed by welding to adjacent sheets.

2. Overlap roof membrane a minimum of 3” (15 cm) for side laps and 3” (15 cm) for end laps.3. Install membrane so that the side laps run across the roof slope lapped towards drainage points.4. All exposed sheet corners shall be rounded a minimum of 1”.5. Use full width rolls in the field of roof and perimeter of the roof.6. Membrane laps shall be heat-welded together. All welds shall be continuous, without voids or partial

welds. Welds shall be free of burns and scorch marks.7. Weld width shall be a minimum of 1-1/2” in width for automatic machine welding. Weld width shall be a

minimum 2” in width for hand welding.8. All cut edges of reinforced membrane must be sealed with EverGuard TPO Cut Edge Sealant.9. Supplemental membrane attachment is required at the base of all walls and curbs, and where the angle of

the substrate changes by more than ten (10) degrees (2” in 12”). Roofing membrane shall be secured to the structural deck with appropriate Drill-Tec screws and plates spaced every 12” o.c. The screws and plates must be installed no less than ½” from the membrane edge. Alternatively, the roofing membrane may be turned up the vertical plane a minimum of 3” and secured with screws and termination bar Fastener spacing is the same as is used for in-lap attachment. The termination bar must be installed within

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1-1/2” to 2” of the plane of the roof membrane, with a minimum of 1” of membrane extending above the termination bar.

10. Supplemental membrane attachment to the structural deck is required at all penetrations. Roofing membrane shall be secured to the deck with appropriate Drill-Tec screws and membrane plates.



E. Mechanically Attached Metal Retrofit System

1. Unroll the EverGuard TPO membrane and allow to relax at least 30 minutes before installing membrane.2. Attach a 6’ wide membrane (based on a typical purlin spacing of 5’-0” on center) by fastening the edge of

the TPO membrane into the steel purlins with Drill-Tec™ Purlin Fasteners and 2 “ double barbed XHD metal plates a maximum of 12” o.c. Fasteners must be installed to achieve the proper embedment depth. Install fasteners without lean or tilt. For purlin spacing other than 5’-0” o.c., please contact GAF Contractor Services at 800/766-3411.

3. For attachment into panels, pull test must be performed to determine appropriate fasteners. Fasteners must achieve minimum acceptable pullout values, or attachment into purlins will be required.

4. Place membrane so that wrinkles and buckles are not formed. Any wrinkles or buckles must be removed from the sheet prior to permanent attachment. Roof membrane shall be mechanically fastened immediately after it is rolled out, followed by welding to adjacent sheets.

5. Overlap roof membrane a minimum of 5” (25 cm) for side laps and 3” (15 cm) for end laps.6. Install membrane so that the side laps run across the roof slope lapped towards drainage points.7. All exposed sheet corners shall be rounded a minimum of 1”.8. Membrane laps shall be heat-welded together. All welds shall be continuous, without voids or partial


for hand welding.10. All cut edges of reinforced membrane must be sealed with EverGuard TPO Cut Edge Sealant.11. The metal plates must be placed within ¼” to ½” of the membrane edge. Plates shall not be placed less

than ¼” from the membrane edge.12. Membrane attachment to the roof deck is required at locations of deck angle changes in excess of five (5)

angle degrees (1” in 12”).13. Supplemental membrane attachment is required at the base of all walls and curbs, and where the angle of

the substrate changes by more than ten (10) degrees (1” in 12”). Roofing membrane shall be secured to the structural deck with screws and plates of the same type and spacing used for in-lap attachment. The screws and plates must be installed no less than ½” from the membrane edge. Alternatively, the roofing membrane may be turned up the vertical plane a minimum of 3” and secured with screws and termination bar Fastener spacing is the same as is used for in-lap attachment. The termination bar must be installed within 1-1/2” to 2” of the plane of the roof membrane, with a minimum of 1” of membrane extending above the termination bar.

3.11 FLASHINGS (OPTION 1 - ARCHITECTS)

A. All penetrations must be at least 24” (61 cm) from curbs, walls, and edges to provide adequate space for proper flashing.

B. Flash all perimeter, curb, and penetration conditions with coated metal, membrane flashing, and flashing accessories as appropriate to the site condition.

C. All coated metal and membrane flashing corners shall be reinforced with preformed corners or non-reinforced membrane.

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D. Hot-air weld all flashing membranes, accessories, and coated metal. A minimum 2” wide (hand welder) weld or minimum 1 - 1/2" automatic machine weld is required.

E. Non-coated metal edge details must be installed in accordance with current EverGuard® construction details and requirements.

F. All twenty (20) year EverGuard® systems require the use of coated metal edges where applicable. Bonding adhesive and/or cover tape is not acceptable.

G. All cut edges of reinforced membrane must be sealed with EverGuard TPO Cut Edge Sealant.

H. Consult the EverGuard® Application and Specifications Manual or GAF Contractor Services for more information on specific construction details.

3.12 FLASHINGS (OPTION 2 - CONTRACTORS)

A. General:1. All penetrations must be at least 24” (61 cm) from curbs, walls, and edges to provide adequate space for

proper flashing.2. Flash all perimeter, curb, and penetration conditions with coated metal, membrane flashing, and flashing

accessories as appropriate to the site condition.3. All coated metal and membrane flashing corners shall be reinforced with preformed corners or non-

reinforced membrane.4. Hot-air weld all flashing membranes, accessories, and coated metal. A minimum 2” wide (hand welder)

weld or minimum 1 - 1/2" automatic machine weld is required.5. All cut edges of reinforced membrane must be sealed with EverGuard TPO Cut Edge Sealant.6. Consult the EverGuard® Application and Specifications Manual or GAF Contractor Services for more

information on specific construction details, or those not addressed in this section.

B. Coated Metal Flashings:1. Coated metal flashings shall be formed in accordance with current EverGuard construction details and

SMACNA guidelines.2. Coated metal sections used for roof edging, base flashing and coping shall be butted together with a ¼”

gap to allow for expansion and contraction. Hot-air weld a 6” wide reinforced membrane flashing strip to both sides of the joint, with approximately 1” on either side of the joint left un-welded to allow for expansion and contraction. 2” wide aluminum tape can be installed over the joint as a bond-breaker, to prevent welding in this area.

3. Coated metal used for sealant pans, scupper inserts, corners of roof edging, base flashing and coping shall be overlapped or provided with separate metal pieces to create a continuous flange condition, and pop-riveted securely. Hot-air weld a 6” wide reinforced membrane flashing strip over all seams that will not be sealed during subsequent flashing installation.

4. Provide a ½” hem for all exposed metal edges to provide corrosion protection and edge reinforcement for improved durability.

5. Provide a ½” hem for all metal flange edges whenever possible to prevent wearing of the roofing and flashing membranes at the flange edge.

6. Coated metal flashings shall be nailed to treated wood nailers or otherwise mechanically attached to the roof deck, wall or curb substrates, in accordance with construction detail requirements.

C. Reinforced Membrane Flashings:1. The thickness of the flashing membrane shall be the same as the thickness of the roofing membrane.2. Membrane flashing may either be installed loose or fully adhered to the substrate surface in accordance

with “Construction Detail Requirements”.3. Where flashings are to be fully adhered, apply bonding adhesive at a rate resulting in 60 square feet/gallon

of finished roofing material for solvent-based bonding adhesives, and at a rate of 125 square feet/gallon of

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finished roofing material for water-borne bonding adhesive. Apply bonding adhesive to both the underside of the membrane and the substrate surface at 120 square feet per gallon (Solvent Based) and 250 square feet per gallon (Water Based). A greater quantity of bonding adhesive may be required based upon the substrate surface condition. The bonding adhesive must be allowed to dry until tacky to the touch before flashing membrane application.

4. Apply the adhesive only when outside temperature is above 40°F. Recommended minimum application temperature is 50°F to allow for easier adhesive application.

5. The membrane flashing shall be carefully positioned prior to application to avoid wrinkles and buckles.

D. Un-reinforced Membrane Flashings:1. Un-reinforced membrane is used to field-fabricate penetration or reinforcement flashings in locations

where preformed corners and pipe boots cannot be properly installed.2. Penetration flashings constructed of un-reinforced membrane are typically installed in two sections, a

horizontal piece that extends onto the roofing membrane and a vertical piece that extends up the penetration. The two pieces are overlapped and hot-air welded together.

3. The un-reinforced membrane flashing shall be adhered to the penetration surface. Apply bonding adhesive at a rate resulting in 60 square feet/gallon of finished roofing material for solvent-based bonding adhesives, and at a rate of 125 square feet/gallon of finished roofing material for water-borne bonding adhesive. Apply bonding adhesive to both the underside of the membrane and the substrate surface at 120 square feet per gallon (Solvent Based) and 250 square feet per gallon (Water Based). A greater quantity of bonding adhesive may be required based upon the substrate surface condition. The bonding adhesive must be allowed to dry until tacky to the touch before flashing membrane application.

E. Roof Edges:1. Roof edge flashings are applicable for gravel stop and drip edge conditions as well as for exterior edges of

parapet walls.2. Flash roof edges with metal flanges nailed 4” O.C. to pressure-treated wood nailers. Where required, hot-

air weld roof membrane to coated metal flanges.3. When the fascia width exceeds 4”, coated metal roof edging must be attached with a continuous cleat to

secure the lower fascia edge. The cleat must be secured to the building no less than 12” O.C.4. Alternatively, roof edges may be flashed with a 2-piece snap on fascia system, adhering the roof

membrane to a metal cant and face nailing the membrane 8” on center prior to installing a snap-on fascia.5. Flash roof edge scuppers with a coated metal insert that is mechanically attached to the roof edge and

integrated as a part of the metal edging.

F. Parapet and Building Walls:1. Flash walls with EverGuard TPO membrane adhered to the substrate with bonding adhesive, loose applied

(Less than 24” in height) or with coated metal flashing nailed 4” on center to pressure-treated wood nailers.

2. Secure membrane flashing at the top edge with a termination bar. Water Block shall be applied between the wall surface and membrane flashing underneath all exposed termination bars. Exposed termination bars shall be mechanically fastened 8” on center; termination bars that are counter flashed shall be fastened 12” on center.

3. Roof membrane must be mechanically attached along the base of walls with screws and plates (deck securement) or screws and inverted termination bar (wall securement) at the following rate:

Mechanically Attached Systems Per in-lap on center spacing, with a 12” maximumFully / Self Adhered Systems 12” on centerBallast Applied Systems 8” on center

4. All coated metal wall flashings and loose applied membrane flashings must be provided with separate metal counterflashings, or metal copings.

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5. Metal counterflashings may be optional with fully adhered flashings depending on guarantee requirements. Exposed termination bars must be sealed with Flexseal® roofing cement or Flexseal® caulk grade.

6. Flash wall scuppers with a coated metal insert that is mechanically attached to the wall and integrated as part of the wall flashing.

G. Curbs and Ducts:1. Flash curbs and ducts with EverGuard TPO membrane adhered to the curb substrate with bonding

adhesive, loose applied (Less than 18” in height) or with coated metal flashing nailed 4” on center to pressure-treated wood nailers.

2. Secure membrane flashing at the top edge with a termination bar. Water Block shall be applied between the curb/duct surface and membrane flashing underneath all termination bars. Exposed termination bars shall be mechanically fastened every 8”o.c.; termination bars that are counter flashed shall be fastened 12” on center.

3. Roof membrane must be mechanically attached along the base of walls with screws and plates (deck securement) or screws and inverted termination bar (wall securement) at the following rate:

Mechanically Attached Systems Per in-lap on center spacing, with a 12” maximumFully / Self Adhered Systems 12” on centerBallast Applied Systems 8” on center

4. All coated metal curb flashings and loose applied membrane flashings must be provided with separate metal counterflashings, or metal copings.

5. Metal counterflashings may be optional with fully adhered flashings depending on guarantee requirements. Exposed termination bars must be sealed with Flexseal® roofing cement or Flexseal® caulk grade.

H. Roof Drains:1. Roof drains must be fitted with compression type clamping rings and strainer baskets. Original-type cast

iron and aluminum drains, as well as retrofit-type cast iron, aluminum or molded plastic drains are acceptable.

2. Roof drains must be provided with a minimum 36” x 36” sump. Slope of tapered insulation within the sump shall not exceed 4” in 12”.

3. Extend the roofing membrane over the drain opening. Locate the drain and cut a hole in the roofing membrane directly over the drain opening. Provide a ½” of membrane flap extending past the drain flange into the drain opening. Punch holes through the roofing membrane at drain bolt locations.

4. For cast iron and aluminum drains, the roofing membrane must be set in a full bed of water block on the drain flange prior to securement with the compression clamping ring. Typical water block application is one 10.5 ounce cartridge per drain.

5. Lap seams shall not be located within the sump area. Where lap seams will be located within the sump area, a separate roof membrane drain flashing a minimum of 12” larger than the sump area must be installed. The roof membrane shall be mechanically attached 12” on center around the drain with screws and plates. The separate roof drain flashing shall be heat welded to the roof membrane beyond the screws and plates, extended over the drain flange, and secured as above.

6. Tighten the drain compression ring in place.

3.13 MAJORSEAL™ LIQUID FLASHING MEMBRANE

A. SUBSTRATE PREPARATON

1. Prime TPO with TOPCOAT® TPO Primer and allow to dry prior to installing MajorSeal™ Liquid Flashing system

2. Flashing material requires a clean, dry surface to assure adequate adhesion. Where necessary clean the surface with isopropyl alcohol and allow it to flash off prior to the application of MajorSeal™ Liquid

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Flashing. Note: Do not use cleaning product such as mineral spirits or xylene, or any hydrocarbon solvent, as it will leave a film and impede adhesion of the liquid flashing.

B. INSTALLATION

1. To assure a neat installation, tape off the area to be flashed.2. Measure any gaps. Fill any gaps ¼ inch (6 mm) to ½ inch (13 mm) with M-Bond sealant prior to

installation of MajorSeal™ Liquid Flashing base coat. Gaps under ¼ inch (6 mm) do not require the application of M-Bond sealant. Gaps ½ inch (13 mm) and larger require a backer rod to keep the sealant in place. (Fig 2)

3. Remove cap from MajorSeal™ pouch and apply the application tip (enclosed). Install a base coat of liquid flashing in the taped off area to a 30 wet mil (0.762 mm) thickness using the enclosed notched trowel or a china bristle brush.

4. Embed precut pieces of Topcoat® Flashing Fabric into the base coat of liquid membrane, so that they extend a minimum of 4 inches (102 mm) on to the field membrane and 4 inches (102 mm) up the penetration. Use a china bristle brush or notched trowel to work the fabric into the base coat of liquid flashing so that it lies smooth and flat.

5. Install the second coat of liquid flashing to a thickness of 30 wet mils (0.762 mm), working the liquid flashing completely over the fabric and extending a minimum of 2 inches (51 mm) past the end of the fabric.

6. Complete the flashing by broadcasting granules immediately into the completed flashing. Once cured [approximately 24 hours at 70° F (21.1°C) and 50% humidity] the membrane may be coated with Topcoat® MB Plus or Topcoat® EnergyCote™ coating.

7. If the opened pouch contains unused liquid flashing, it may be reused for up to 14 days if properly sealed. To properly seal the pouch, squeeze all excess air from the pouch and return the cap. Do not use if material does not flow freely from pouch or has cured particles.

8. Wet material may be cleaned up with isopropyl alcohol. Cured material may be abraded from the substrate.

3.14 SEPARATION MAT

A. Apply a 3 oz poly separation slip-sheet above the roofing membrane under all ballasted installations where existing stone ballast is reused or where the underside of the paver is smooth and regular, and has integral drainage channels.

B. Apply a 6 oz poly cushioning slip-sheet above the roofing membrane under all paver applications where pavers are used as walkways, work surfaces, or as heavyweight perimeter ballast.

C. Loose-lay separation mat over the membrane so that wrinkles and buckles are not formed. Overlap separation mat a minimum of 6” for side and end laps, and immediately install ballast or pavers over the loose laid separation mat.

3.15 INTERLOCKING PAVERS

A. Install interlocking concrete pavers in accordance with requirements determined by the most current revision of ASCE 7, and the paver manufacturer’s recommendations for stagger and interlock.

B. Utilize perimeter securement of interlocking pavers and/or paver clips in accordance with the paver manufacturer’s requirements.

3.16 NON-INTERLOCKING PAVERS

A. Install non-Interlocking concrete pavers in accordance with requirements determined by the most current revision of ASCE 7 and the paver manufacturer’s requirements.

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B. Utilize perimeter securement of non-interlocking pavers in accordance with the paver manufacturer’s requirements.

3.17 PEDESTAL PAVERS

A. Install concrete pavers and pedestals in accordance with requirements determined by the most current revision of ASCE 7, and the paver manufacturer’s recommendations.

3.18 STONE BALLAST

A. Install stone ballast in accordance with requirements determined by the most current revision of ANSI RP-4. 1. Minimum ballast application rate for #4 nominal 1-1/2" ballast is 10 lbs. per sq.ft.2. Minimum ballast application rate for #2 nominal 2-1/2" ballast is 13 lbs. per sq.ft.

3.19 TRAFFIC PROTECTION

A. Install walkway rolls at all roof access locations and other designated locations including roof-mounted equipment work locations and areas of repeated rooftop traffic.

B. Walkway pads must be spaced 2" apart to allow for drainage between the pads.

C. Heat-weld walkway rolls to the roof membrane surface continuously around the perimeter of the roll.

D. Walkway rolls may be installed with TPO primer and 3” seam tape. 1. Roll or brush the TPO primer on the back of the TPO pad along the edges and down the middle length of the

pad. 2. Clean and prime the roof membrane where the pad will be installed.3. Install tape to the back of the cleaned area of the pad and roll in with a silicone hand roller.4. Remove release paper and install the tapes pads directly onto the roof membrane. Roll pads to secure in

place

3.20 STANDING SEAM PROFILES

A. Install EverGuard® SA TPO Standing Seam Profile per GAF® requirements.

3.21 ROOF PROTECTION

A. Protect all partially and fully completed roofing work from other trades until completion.

B. Whenever possible, stage materials in such a manner that foot traffic is minimized over completed roof areas.

C. When it is not possible to stage materials away from locations where partial or complete installation has taken place, temporary walkways and platforms shall be installed in order to protect all completed roof areas from traffic and point loading during the application process.

D. Temporary tie-ins shall be installed at the end of each workday and removed prior to commencement of work the following day.

3.22 CLEAN-UP

A. All work areas are to be kept clean, clear and free of debris at all times.

B. Do not allow trash, waste, or debris to collect on the roof. These items shall be removed from the roof on a daily basis.

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C. All tools and unused materials must be collected at the end of each workday and stored properly off of the finished roof surface and protected from exposure to the elements.

D. Dispose of or recycle all trash and excess material in a manner conforming to current EPA regulations and local laws.

E. Properly clean the finished roof surface after completion, and make sure the drains and gutters are not clogged.

F. Clean and restore all damaged surfaces to their original condition.

3.23 MAINTENANCE

A. Inspections to the roof shall be performed annually by a GAF® Master or Master Select contractor, and also must be a GAF® Certified Maintenance Professional (CMP).

B. An annual roofing system maintenance program shall be performed by a GAF® Master or Master Select Certified Maintenance Professional (CMP) in accordance with GAF’s 10 Point Maintenance Program provided with your Diamond Pledge guarantee.

C. Submit copies of the roof inspection form, accompanying photographs (a minimum of 6 photos showing the condition of the roof and critical details), and a record of all roofing system maintenance to the GAF Contractor Services Department within sixty (60) days of the anniversary date of the completion of the roofing system. Annual roof inspections must be started within the first two (2) years of the guarantee term.

END OF SECTION

Rev 07 /13

section 07525 - buildsite · web viewfire resistant glass fiber mat used as a separation sheet over...

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