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Flat-roof insulation

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1111ext11pACFoam-HS cover board is said to combine the insulating power and strength of a durable cover board and the stability of a lightweight coated-glass facer. According to the company, the product keeps insulation secure beneath the roofing membrane and resists damage from foot traffic and heavy loads. The cover board uses closed-cell polyiso foam laminated to a coated-glass facer, providing an R-value of 2.5/half-inch. Designed for most flat-roof applications, it is hot-asphalt compatible for attachment to base insulation layers in modified-bitumen and BUR roof systems.
Atlas Roofing Corp., Atlanta,

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