Cover Board has 2.5 R-Value

The ISOGARD HD Cover Board by Firestone Building Products Co. is a high-density cover board with an R-Value of 2.5. The ½-cover board offers high thermal performance and is resistant to extreme weather conditions. Made with fiberglass and a mold- and moisture-resistant facer, this lightweight, heavy-duty board lays flat and has a compressive strength of 120 PSI. The product meets the FM Global 1-90 standard.


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