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Document record
The 11-page guideline describes the Max-Ply full-fabric membrane system as applied to EPDM roof surfaces. Dated 11/04/25 on the cover, the file carries revision 10/06/25 in its footers.
The product section catalogs each coating with its elongation, tensile strength and solids figures. Listed items include Silicone 410, High-Solids Silicone 412, Aliphatic Urethane 510-CA and Aromatic Urethane 508, followed by the spunbound polyester fabric and the primers and cleaners.
Part 3 starts with surface preparation at a 3,000 psi minimum pressure wash, with Ecocleaner 925 used as needed for contaminants. The steps cover removal of unneeded equipment, condensate drain routing, HVAC stanchion condition and flashing of roof penetrations to the roof manufacturer’s specifications. Part 1 adds that all American WeatherStar products are applied by a single, experienced and competent contractor approved by American WeatherStar, and that the guideline does not outline every procedure for penetrations, drains and flashings.
Material changes / notes
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