Paraflex 531 Liquid Flashing System

Installer’s Guide

2

Table of Contents

I. System Overview and Products 1

II. Personal Protection 1

III. Storage 1

IV. Installation Materials, Tools, and Equipment 1

V. Substrate Preparation and Repair 2

VI. Pro Primer AC 3

VII. Pro Fleece 4

VIII. Paraflex 531 Liquid Flashing Membrane 4

IX. Consumption/Coverage Rates and Summary of Application Information 5

X. Paraflex 531 Liquid Flashing Membrane (Finish Ply Application) 6

Appendix A Standard Paraflex 531 Liquid Flashing Membrane Details 8

Appendix B Paraflex 531 Liquid Flashing Membrane Fleece Cutting Diagrams 10

1

System Overview and Products

Installation Materials, Tools, and Equipment

Personal Protection

Storage

The Siplast Paraflex 531 Liquid Flashing MembraneThe Siplast Paraflex 531 Liquid Flashing Membrane is a liquid-applied, silane terminated polymer-based (STP) flashing system designed for use in conjunction with SBS-modified bitumen and silane terminated polymer-based (STP) roofing and waterproofing sys-tems. The Paraflex 531 Liquid Flashing Membrane is a layered application consisting of waterproofing layers reinforced with polyester fleece. Pro Primer AC is used for bleed-blocking purposes over asphaltic, wood, and plywood substrates.

Substrate Preparation• Blower, vacuum, and broom• Hand grinder with carbide disk, diamond cup, or

other appropriate abrasive wheel• Shot blaster with dust collector/air pulse com-

pressor• Sandpaper

Mixing• Plastic tarps or sheeting• Variable speed drill with mixing agitator• Stir sticks

Safety and Protection Refer to the applicable Paraflex and Pro product Safety Data Sheets (SDS) for specific PPE information. Paraflex and Pro liquid products are harmful if inhaled, swallowed, or absorbed through the skin and can cause skin and eye irritation.

StorageStore Paraflex and Pro products indoors in closed containers in a well-ventilated, cool, dry area away from direct sunlight, heat, and open flame. The shelf life of Paraflex 531 Liquid Flashing Membrane is 6 months if stored properly at 40ºF to 90ºF (5ºC to 32ºC). Pro Primer AC shelf life is 18 months if un-opened and stored properly at 40ºF to 90ºF (5ºC to 32ºC). Do not allow Pro Primer AC to freeze. Proper storage is important to help ensure that the product remains usable, and to maintain product quality.

The Paraflex 531 Liquid Flashing Membrane used with Siplast SBS-Modified Bitumen Roof Membrane Systems The Paraflex 531 Liquid Flashing Membrane can be applied directly over standard Siplast SBS-modified bitumen roof systems that are applied by torch, hot asphalt, or SFT Adhesive. Refer to the application instructions beginning on page 6 of this guide for step-by-step installation procedures. Contact the Siplast Technical Department at 1-800-922-8800 for information.

Application• Tape (masking, duct or gaffer’s tape)• Application brushes and rollers• Heavy duty scissors• Disposable butyl rubber or nitrile gloves• Pro Tape

Miscellaneous• Cotton rags• Box or razor knife• Tape measure• Chalk line

Do not ingest Paraflex or Pro products, and avoid contact with eyes, skin, and clothing. Wear suitable gloves and eye/face protection. Wash thoroughly after handling the products. Keep the products out of reach of children.

First aid information is available on Paraflex and Pro product SDS documents and product containers.

A “skin” of partially cured product may form on the surface of less than full pails of Paraflex liquid material. Peel away and dispose of the layer of partially cured Paraflex to expose fluid product prior to stirring and application.

Materials stored on the job site during application should be kept on a pallet in a shaded, well-ventilated area. In unshaded areas, cover materials with a white, reflective tarp in a manner that allows air circulation beneath the tarp.

I.

IV.

II.

III.

2

Substrate Preparation and Repair

General Substrate Preparation All substrates must be free from gross irregularities, loose material, unsound material, foreign material (such as dirt, ice, snow, water, grease, oil, release agents, lacquers, paint coverings), or any other condi-tion that would be detrimental to the adhesion of the primer and/or resin to the substrate. Some surfaces may require shotblasting, scarification followed by shotblasting, or grinding to achieve a suitable sub-

strate. Substrate preparation guidelines appear in the chart below but it is important to note that require-ments can vary for a particular situation. In applica-tions where adhesion to a substrate not listed in the chart is required, please contact the Siplast Technical Department at 1-800-922-8800 for information on testing such substrates for adhesion by performing a field bond test.

V.

SubstratePreparatory Guidelines

Pro Primer AC Recommended as a Bleed Blocker

Rust-Oleum V2100 Primer

Required

Aluminum, Copper, Stainless Steel 1, 2, 3, 4, 13 •

Lead, Steel 1, 2, 3, 4

Galvanized Steel 1, 2, 3, 4

Paint/Coating 7

Mopping Asphalt, Smooth SBS, Rubberized Asphalt 1, 10, 11 •

Concrete (Normal-Weight) 1, 5

Polymer Modified Concrete 1, 8

Clay/Ceramic Tile, Brick 1, 6

Wood/BC Plywood 1, 12 •

DensDeck Prime, Approved Cementitious Boards 1

Irex/Paradiene 20 Base Plies 1, 12 •

Paradiene 20 P/Pro Base (Exposed bitumen at laps) 1, 14 •

Siplast granule-surfaced finish/flashing sheets 1, 12, 14 •

1. Substrate must be clean and dry and free from gross irregularities, loose material, unsound material, or any foreign material (such as dirt, ice, snow, water, grease, bitumen/coal tar, oil, release agents, lacquers, paint coverings), or any other condition that would be detrimental to the adhe-sion of the primer and/or resin to the substrate.

2. Remove rust or other oxidation layers. 3. Abrade surface to bright finish prior to cleaning

with Pro Prep M. 4. Wipe down thoroughly with Pro Prep M prior

to coating. Allow Pro Prep M a minimum of 20 minutes drying time after application before con-tinuing. The next application process should be completed within 60 minutes of cleaning with Pro Prep M.

5. See detailed substrate preparation and repair guidelines on page 3 and 4.

6. Grind surface to remove glaze. Tiles must be fully bonded to a sound foundation. Ensure that no moisture is present beneath tiles.

7. All paint coverings and coatings must be removed.

8. Refer to polymer concrete manufacturer’s require-ments for suitability as a substrate for waterproof-ing materials. Prepare by shotblasting or grinding. Contact Siplast for a list of approved polymer concrete products.

9. Tape all joints between panels and panel edges at all walls, perimeters, and penetrations using gaffer’s tape or Eternabond® Webseal®.

10. Mopping asphalt residue should be primed with Pro Primer AC to minimize aesthetic concerns.

11. Priming with Pro Primer AC is recommended over raw asphalt if aesthetics is a concern.

12. Pro Primer AC is applied to maintain a consistent aesthetic appearance.

13. Prepare metal and prime with Rust-Oleum V2100 System Enamel Spray Primer (V2182838) prior to application of Paraflex 531 Liquid Flashing Resin. Do not use Rust-Oleum V2100 System Enamel Spray Primer on galvanized steel.

14. Prime bleed-out at side and end laps using Pro Primer AC to maintain a consistent aesthetic appearance.

3

Pro Primer AC

General Application Guidelines Prime wood, plywood, and asphaltic substrates with Pro Primer AC prior to application of Paraflex 531 Liquid Flashing Membrane to maintain a consistent aesthetic appearance.

If contents have separated, thoroughly mix the Pro Primer AC before each use to redistribute liquids/solids.

Pro Primer AC can be applied when the ambient and substrate temperatures are within the range noted below. Discontinue primer application when the ambi-ent or substrate temperature is outside of the speci-fied range or if conditions will not allow for complete cure before rain, dew or freezing temperatures occur. Do not apply Pro Primer AC if ambient or substrate temperatures are below 50°F (10°C), if there is a possibility that ambient temperatures may fall to 32ºF

(0º C) within 2 hours of application, if the substrate is within 5ºF of the dew point, or if the relative humidity is above 90%. Cool temperatures and high humidity will slow the drying process.

• Application Temperature Range (ambient/ substrate): 50°F to 105°F (10°C t5o 40°C)

• Dry Time to Touch: 20-30 minutes @ 75ºF (24ºC)/50% RH (ASTM D1640)

• Cure Time for Application of Subsequent Coats of Primer: Typically 1hour (depending on ambient conditions)

See Section IX for information on application rates over specific substrates.

It is important to note that application/coverage rates may vary depending upon the specific substrate and the texture/porosity of the substrate.

VI.

Substrate Preparation and Repair

Cracks, Joints, and Small IndentationsSee Siplast standard details for specifics on crack and joint treatment.

Concrete & MasonryNew concrete must be cured a minimum of 28 days in accordance with ACI-308 (or as recommended by the concrete manufacturer) and meet moisture content guidelines. New or existing concrete must be prepared to provide a sound substrate free from laitance and should be free from materials that may inhibit adhesion of the Paraflex 531 Liquid Flashing Membrane. All spalls and voids must be repaired and allowed to cure a minimum of 28 days in accordance with ACI-308 (or as recommended by the concrete manufacturer). Masonry walls should be prepared in the same manner as concrete substrates. Paraflex 531 Flashing materials must not be applied over soft or scaling brick or masonry, faulty mortar joints, or walls with broken, damaged, or a leaking coping system. Masonry wall surfaces above the ter-mination of the Paraflex 531 Flashing materials should be appropriately treated against moisture intrusion, and a properly sealed, reglet-anchored counterflash-ing should be considered. Siplast guarantees do not offer a remedy for leaks or damage to the Paraflex 531 Liquid Flashing Membrane resulting from moisture entry through walls above the flashing system.

Metal & Rigid PlasticClean and lightly abrade metal and rigid plastic sub-strates. Extend the preparation area a minimum of 1⁄4-inch (7 mm) beyond the termination of the Paraflex materials.

Siplast Granule-Surfaced MembranesRemove all loose granules, dust, and organic debris from the surface of the roof membrane by brooming, and/or power vacuuming, low-pressure wash, or other suitable method prior to application of the Paraflex 531 Liquid Flashing Membrane. If a low-pressure wash is used, the substrate must be allowed to dry completely prior to application of flashing membrane components. Prime sheets using Pro Primer AC if a consistent aesthetic appearance is desired.

Insulation/Substrate PanelsAcceptable sheathings for a direct application of Paraflex materials include cementitious panels and DensDeck Prime. Common paper-faced gypsum wall board is not an approved substrate. Treat joints between approved sheathing panels using Siplast Pro Tape or Eternabond Webseal®. The Paraflex 531 Liq-uid Flashing Membrane applied to walls constructed using approved insulation or substrate panels must be adequately counterflashed.

Plywood Sheathing PanelsPlywood should be exterior grade, BC or better. Install panels with the “B” side to receive the primer or Para-flex 531 Liquid Flashing Membrane. Pressure treated and fire-retardant plywood is typically wet with chem-ical treatments and must be reviewed on a job-to-job basis. Plywood joints should be treated using Siplast Pro Tape or Eternabond Webseal® prior to application of the Paraflex 531 Liquid Flashing Membrane. Prime panels using Pro Primer AC to maintain a consistent aesthetic appearance.

4

Pro Fleece

Pro Fleece is the reinforcement layer used in Paraflex 531 Flashing Membrane Systems and is available in three widths: 41-inch (1050 mm), 25-inch (630 mm), and 12-inch (315 mm).

VII.

Paraflex 531 Liquid Flashing Membrane

Paraflex 531 Liquid Flashing Membrane General Application Guidelines Paraflex 531 Liquid Flashing Membrane is combined with Pro Fleece fabric to form a monolithic, reinforced flashing membrane used for flashing details.

If contents have separated, thoroughly mix the entire drum of Paraflex 531 Liquid Flashing Membrane before each use to redistribute liquids/solids.

Paraflex 531 Liquid Flashing Membrane may be ap-plied under the conditions outlined below.• Minimum Application Temperature (product at

time of application): 55°F (13°C)• Minimum Application Temperature (ambient/sub-

strate): 40°F (5°C)• Do not apply Paraflex 531 Liquid Flashing Mem-

brane if the ambient or substrate temperature is within 5°F of the dew point.

Apply an even, generous base coat of Paraflex 531 Liquid Flashing Membrane to the substrate with a roller or brush. Pro Fleece reinforcement is then worked into the wet base coat using a roller or brush to fully embed the fleece and remove trapped air. Overlap Pro Fleece a minimum of 2 inches (50 mm). An additional coat of Paraflex 531 Liquid Flashing Membrane must be placed between all layers of overlapping fleece. Extend Paraflex 531 Liquid Flash-ing Membrane a maximum 1⁄4-inch beyond the Pro Fleece reinforcement. Apply an even, generous top coat of Paraflex 531 Liquid Flashing Membrane immediately following embedment of the fleece to ensure full saturation of the fleece reinforcement. See Section IX for informaiton on application/coverage rates. If work is interrupted for more than 12 hours, or the surface of the previously applied and cured Paraflex 531 Liquid Flashing Membrane becomes dirty or con-taminated from exposure to the elements, thoroughly clean the transition area with Pro Prep M. Pro Prep M should be allowed a minimum of 20 minutes evapora-tion time after application before continuing work.

Coverage and Overlap Requirements• Maintain a minimum 2-inch (50 mm) fleece over-

lap at all laps.• A minimum 8-inch (200 mm) overlap onto the sur-

face of the finish ply is required when the Paraflex 531 Liquid Flashing Membrane is applied over an approved finished ply.

• The Paraflex 531 Liquid Flashing Membrane should terminate a minimum of 6 inches (150 mm) above the horizontal when applied in a vertical orientation.

• Paraflex 531 Liquid Flashing Membrane should extend a maximum 1⁄4-inch beyond the Pro Fleece reinforcement.

• The Paraflex 531 Liquid Flashing Membrane should not be used in conjunction with Siplast membranes applied in solvent-based adhesives. Siplast SFT adhesives should be used in lieu of solvent-based products in such cases and the applicable SFT adhesive product must be allowed to fully cure before application of Siplast Paraflex 531 Liquid Flashing Membrane.

General Application Information• Pot Life: 1 hour• Dry Time to Touch: 30 minutes • Rainproof After: 90 minutes • Cure Time Prior to Application of Subsequent

Coats of Paraflex 531 Liquid Flashing Membrane Resin: 6 hours

• Trafficable After: 6 hours • Full Cure After: 72 hours

All of the above times are approximate and are based upon application of product at 75ºF and 50% RH.

VIII.

5

Consumption/Coverage Rates and Summary of Application Information

The application/consumption rates above do not include waste, overage due to uneven/rough substrates, product needed to treat cracks/joints/overlaps, and material required to saturate roller covers.

IX.

Minimum Consumption/Coverage Rates

Layer gal/sf liter/m2 sf/unit

Pro Primer AC over smooth asphaltic substrates 0.006 0.24 833 sf (5-gal pail)

Pro Primer AC over granule-surfaced substrates 0.007 0.29 714 sf (5-gal pail)

Pro Primer AC over wood/plywood 0.004 0.17 1250 sf (5-gal pail)

Paraflex 531 Liquid Flashing over granule surfaces 0.075 3.1

26 sf (2-gal pail)Paraflex 531 Liquid Flashing base layer 0.056 2.3

Paraflex 531 Liquid Flashing top layer 0.019 0.79

Paraflex 531 Liquid Flashing over smooth surfaces 0.056 2.31

35 sf (2-gal pail)Paraflex 531 Liquid Flashing base layer 0.037 1.52

Paraflex 531 Liquid Flashing top layer 0.019 0.79

Storage Temperatures / Shelf Life

Product Shelf Life Storage Temperature Range

Pro Primer AC 18 Months 40°F to 90°F (5°C to 32°C)

Paraflex Liquid Flashing Membrane 6 Months 40°F to 90°F (5°C to 32°C)

Material and Ambient / Substrate Temperatures

ProductProduct Temperature at the Time of Application

Ambient/Substrate Temperature Range at the Time of Application

Pro Primer AC 50°F to 105°F (10°C to 40°C) 50°F to 105°F (10°C to 40°C)

Paraflex Liquid Flashing Membrane 55°F (minimum) (13°C) 40°F (minimum) (5°C)

Paraflex Weight

Product lb/gal

Paraflex Liquid Flashing Membrane 12.53

Paraflex Coverage DataApplication over Smooth-Surfaced Substrates

Paraflex Layer gal/sf lb/sf gal/sq lb/sq sf cvg/2-gal pail

Total 0.056 0.702 5.60 70.17 35

Base 0.037 0.464 3.70 46.36

Top 0.019 0.238 1.90 23.81

6

See Siplast specifications and details for specific applications. Consumption/coverage rates do not include waste or overage factors, including materials required to saturate roller covers or brushes.

Paraflex Coverage DataApplication over Granule-Surfaced Substrates

Paraflex Layer gal/sf lb/sf gal/sq lb/sq sf cvg/2-gal pail

Total 0.075 0.940 7.50 93.98 26

Base 0.056 0.702 5.60 70.17

Top 0.019 0.238 1.90 23.81

Paraflex 531 Liquid Flashing Membrane (Finish Ply Application)

Flashing a Penetration: The following images represent the steps required to flash a penetration over the finish ply of a granule-surfaced SBS-modified bitumen roof system. Application/consumption/coverage rates are listed on page 5.

1. Ensure that the finish ply of the roof system fits tightly around the penetration.

6. Mix the Paraflex 531 Liquid Flashing Resin.

4. Mask-off the termination of flashing a minimum of 6 inch-es high on the vertical and 8 inches beyond the penetration on the horizontal. Paraflex 531 Liquid Flashing Membrane must not extend more than ¼-inch beyond the Pro Fleece reinforce-ment – place tape accordingly.

2. Using a grinder, remove all for-eign materials from the penetra-tion, such as dirt, rust, asphalt, and coatings/paint. Refer to the substrate preparation chart on page 2 for more information.

5. Cut the Pro Fleece reinforce-ment. Dry-set each piece to ensure proper fit.

3. Using Pro Prep and a clean shop rag, wipe the area of the penetration to be flashed. Allow the Pro Prep to dry before appli-cation of flashing materials.

X.

7

9. Saturate all fleece surfaces to be lapped prior to overlapping with subsequent layers of fleece. Fleece overlaps must be a mini-mum of 2 inches.

12. Remove the masking tape be-fore the resin sets.

10. Apply a base coat of Paraflex 531 Liquid Flashing Membrane over the horizontal substrate, extended a minimum of 8 inches beyond the penetration in all directions. Set the pre-cut Pro Fleece over the base coat and embed the fleece into the resin. Ensure that the resin does not extend more than ¼-inch beyond the Pro Fleece reinforce-ment.

7. Apply a base coat of Paraflex 531 Liquid Flashing Membrane to vertical surfaces and extend onto the roof membrane a mini-mum of 2 inches.

11. Top coat the embedded Pro Fleece with Paraflex 531 Liquid Flashing Membrane.

8. Apply the pre-cut Pro Fleece over the vertical substrate and 2 inches onto the roof membrane and embed into the base coat, ensuring that no air is trapped beneath the fleece.

8

Appendix AStandard Paraflex 531 Liquid Flashing Membrane Details

Typical Penetration Detail

9

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10

Appendix BParaflex 531 Liquid Flashing Membrane Fleece Cutting Diagrams

Typical Angle Iron Detail 1: Vertical Surfaces

Typical Angle Iron Detail 2: Horizontal Surfaces

Typical I-Beam Detail 1: Vertical Surfaces

Typical I-Beam Detail 2: Horizontal Surfaces

Typical Round Pipe Detail

Outside Corner Detail (bottom)

Inside Corner Detail

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)

FOLD LINE

FOLD LINE

FOLD LINE

18

February 2019

For information on Siplast Roofing and Waterproofing Systems, scan our QR Code.

Siplast

1000 Rochelle Blvd.

Irving, Texas 75062

469-995-2200

Facsimile: 469-995-2205

In Canada:

201 Bewicke Ave., Suite 208

Vancouver, BC,

Canada V7M 3M7

604-929-7687

Customer Service in

North America:

Toll Free 1-800-922-8800

www.siplast.com