Cover Boards

ISOGARD™ HD Cover Board

ISOGARD HD cover board contains a closed-cell polyiso core that utilizes ISOGARD foam technology, and can provide greater UL fire ratings. ISOGARD HD cover board provides the highest thermal performance of any 1/2″ insulation cover board product on the market, and it is resistant to extreme weather conditions.  Lightweight and easy to cut and install, this high density cover board offers savings from reduced transportation costs, labor and material during application.

DensDeck® and DensDeck Prime Cover Board

DensDeck and DensDeck Prime cover board are non-structural, glass mat-faced roof boards that feature a non-combustible, water-resistant and silicone-treated gypsum core panel. DensDeck boards are an excellent substrate in most reroof applications and may be used with mechanically fastened or fully-adhered RubberGard™ EPDM or UltraPly™ TPO roofing systems and are compatible with modified bitumen and BUR systems in certain assemblies. DensDeck and DensDeck Prime products are available from Firestone in 1/4″, 1/2″ and 5/8″ thicknesses. DensDeck is a registered trademark of Georgia-Pacific.

FiberTop Cover Board

FiberTop cover board is a durable wood fiber insulation that serves as a recover board and provides insulating value in roof assemblies. Firestone FiberTop boards make a suitable substrate for base sheets and modified bitumen roofing systems and are available in 1/2″ and 1″ thicknesses.

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