Primed gypsum roof cover board sheet

DensDeck Prime is a primed gypsum roof board designed to provide a durable, high-performance cover board surface for commercial roofing assemblies. It features a fiberglass mat facer and high-density gypsum core to help improve membrane bond strength while supporting fire and moisture resistance requirements in many systems.

Key Features:

• Enhanced Adhesion Surface: Coated fiberglass facer is designed to provide improved compatibility and performance with roofing adhesives in fully adhered systems.
• Fire-Resistant Cover Board: Noncombustible gypsum roof board with 0/0 flame spread and smoke developed when tested per ASTM E84; referenced as FM Class 1/UL Class A performance for assemblies.
• Moisture-Resistant Performance: Designed for water resistance with up to 5% water absorption by weight and 1-gram nominal surface water absorption on both sides.
• System Versatility: Created for mechanically fastened, adhered, and partially adhered roofing systems.
• Durable Protection Layer: Helps defend roof assemblies from punctures, wind, and jobsite/foot-traffic wear.

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What size and thickness is this board?
A: This product is a 4 ft. x 8 ft. sheet with a nominal 1/4 in. thickness.

Q: What types of roofing systems is it used with?
A: It is intended for mechanically fastened, adhered, and partially adhered roofing systems as a cover board and bonding surface.

Q: Is this board moisture resistant?
A: Yespublished performance notes up to 5% water absorption by weight and 1-gram nominal surface water absorption on both sides of the board.

Q: Does it have fire performance ratings?
A: Published data notes 0/0 flame spread/smoke developed (ASTM E84) and references FM Class 1 and UL Class A performance in assemblies.

Q: Is it compatible with roofing adhesives?
A: Yesthe enhanced/coated fiberglass facer is described as improving compatibility and performance with roofing adhesives, especially in fully adhered systems.

A sleek, high-performance foundation for the roofline

Theres a quiet luxury in materials that do the hard work beautifullyDensDeck Prime brings a crisp, primed surface and a refined, fiberglass-faced finish that elevates whats beneath the membrane. Its high-density gypsum core is engineered for resilience, helping the roof assembly stand up to moisture, fire demands, and the wear of real-world conditions. Pair it with fully adhered systems when you want that confident, continuous bond and a cleaner build sequence. Its the kind of unseen layer that makes the entire structure feel impeccably considered.

Choose DensDeck Prime 1/4 in. 4×8 to add a durable, moisture- and fire-conscious cover board layer that helps your roofing system perform longer.