Makrolon® multi UV Guide to multiwall installation

1 ) Sheet storage recommendation, wherever possible, is to be stored flat and ideally indoors. Exterior storage requires covering pallet against weather elements.

2 ) We recommend a roof pitch of at least 5° to allow rainwater runoff. This has the added benefit of maintaining seal integrity and the glazing is naturally cleaned by rainwater. The chosen supporting structure must be non-warping, i.e. laminated timber beams or metal supporting structures with longitudinal rafters on which the glazing bars are mounted.

3 ) Install the base section of the glazing bar to the rafter. The glazing bar edge seals against the rafter and the sheet.

4 ) The sheet width (B) is calculated as the total of the rafter spacing, glazing bar dimensions, and sheet expansion allowance. (1/30”/ foot for polycarbonate)

5 ) The sheet length (L) is defined as: E = the span A = sheet edge engagement S = allowance for expansion Delta L represents sheet lengths available for sale

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PreparationInstalling on roofs

5°

End closure section

Terminal angle

Makrolon® multi UVEnd closure section

Glazing bar

Terminal angle

Calculation Example:Sheet size: 4´ x 8´Expected high temperature: 100°FExpected low temperature: -10°FTemperature difference: delta T. 110°FExpansion in width: a. delta T. W = 0.0000375 x 110°F x 48˝ = 0.198˝Expansion in length: a. delta T. L = 0.0000375 x 110°F x 96˝ = 0.396˝Page 2

6 ) Mark dimensions on the masking which should not be removed until completing all fabrication work and after installation. Cut sheets using a conventional circular saw equipped with a carbide tip blade. For more information, refer to the Fabrication Guide.

7. Plastic chips and dust that collect in the channels, as a result of cutting, can be blown out with compressed air or cleared by a shop vac.

8. Where the sheet needs to be trimmed, cut as close to the next rib to ensure a rigid clamping profile.

9. Corner cutouts are often required (e.g. for pipes, ventilation, etc.). Use a jig saw (without pendulum stroke). Drilling can be performed with twist drills (point angle ϕ 110°-130°), conical or step drills.

10. The potential for condensation in the channels exist but can be controlled by sealing the top edge of the sheet and covering the bottom with a material that allows air to flow through. With air flow through the channels, condensation that forms may dry out while creating a barrier from dust, dirt, and bugs.

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Cutting to sizeInstalling on roofs

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11. Place the Makrolon® multi UV sheets on the purlins. It is important to place the side with UV protection facing outwards or upwards. This side is marked on the masking and stamped along the sheet edge. Avoid walking on the sheets. If necessary, place a thick plank across the sheet.

12. Peel back the masking and fasten the upper sections of the glazing bars using the recommended screws and washers. Depending on the glazing system, a cover section is then clipped on.

13. Finally, remove the masking from the Makrolon multi UV sheets. It should not be exposed to weathering for more than 24 hours.

14. Seal the top edge of the sheet to prevent air and moisture from penetrating the channels. Use a sealant that is compatible with Makrolon sheet. Important Note: Condensation may form in the sheet channels in certain weather conditions. This is a temporary condition that is typically of short duration. It does not affect the function and service life of the sheets as defined by the published warranty.

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The manner in which you use and the purpose to which you put and utilize our products, technical assistance and information (whether verbal, written or by way of production evaluations), including any suggested formulations and recommenda-tions, are beyond our control. Therefore, it is imperative that you test our products, technical assistance, information and recommendations to determine to your own satisfaction whether our products, technical assistance and information are suitable for your intended uses and applications. This application-specific analysis must at least include testing to determine suitability from a technical as well as health, safety, and environmental standpoint. Such testing has not necessarily been done by Covestro. Unless we otherwise agree in writing, all products are sold strictly pursuant to the terms of our standard conditions of sale which are available upon request. All information and technical assistance is given without warranty or guarantee and is subject to change without notice. It is expressly understood and agreed that you assume and hereby expressly release us from all liability, in tort, contract or otherwise, incurred in connection with the use of our products, technical assistance, and information. Any statement or recommendation not contained herein is unauthorized and shall not bind us. Nothing herein shall be construed as a recommendation to use any product in conflict with any claim of any patent relative to any material or its use. No license is implied or in fact granted under the claims of any patent.With respect to health, safety and environment precautions, the relevant Safety Data Sheets (SDS) and product labels must be observed prior to working with our products.

BRO026 1115©Copyright, Covestro, 2015 Makrolon® is a registered trademark of Covestro

119 Salisbury RoadSheffield, MA 01257Toll Free: 800.254.1707Fax: 800.457.3553sfdinfo@covestro.comsheets.covestro.com

Makrolon®

Compatible Products

Many other glazing materials are commercially available which are compatible with Makrolon Polycarbonate Sheet. Please contact those manufacturers for their recommended products.

Recommended Sealants, Gaskets, and Tapes Product Type Product Name Manufacturer Silicone Dow 795 Dow-Corning Corp Dow 999 Midland, MI (800) 346-9882

Silicone Multisil Momentive Performance Materials Waterford, NY (877) 943-7325

Silicone Spectrem 2 Tremco Proglaze SSG Columbus, OH (800) 321-7906

Gasket EPDM (60,70D) Tremco Columbus, OH (800) 321-6357

Tape 440 Tremco SGT 900 Beechwood, OH (800) 321-7906

Gasket/Tape Norrene® Foam Norton Company V-2100 Urethane Granville, NY (518) 642-2200

Butyl Tape SM5601 Schnee-Morehead SM5700 Irving, TX (800) 878-7876

Vent Tape G Series, Top Edge ITP AD 3400 Series, Bottom Edge (410) 757-5040

The information provided in this brochure are typical installation guidelines for easy to follow steps utilizing commercially available glazing systems. The examples described herein refer to commonly available glazing bars.

For additional information contact your authorized Makrolon multi UV sheet distributor.