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The application guideline describes how to apply a coated spray polyurethane foam and reflective roof coating system over a metal roof. The 11-page PDF was last revised 04/14/26.
The product section gives closed cell foam properties that match the Foam-Gard built-up roofing guideline: density, compressive strength, open cell content, K-value and flammability under ASTM E84. It cites UL 790 and Factory Mutual RoofNAV requirements and refers to CPI Bulletin AX-230. The coatings section lists type, viscosity, elongation, tensile strength, volume solids and color for Acrylic 211, High-Tensile Acrylic 211, Silicone 410, High Solids Silicone 412, Aliphatic Urethane 510-CA, Aromatic Urethane 512-CA, Aromatic Urethane 520 and Aromatic Urethane 508.
The warranty section makes the NDL warranty depend on gasketed threaded fasteners driven directly into metal purlins. Attachment into wood substrates, or with nails or other non-approved fastening, is listed as ineligible for NDL coverage. A Pre-Project Inspection Report is required before work starts.
Material changes / notes
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