1/2 in x 4 ft x 8 ft National Gypsum DEXcell Glass Mat Roof Board

DEXcell® Cement Roof Board is a lightweight, moisture- and mold-resistant panel that provides an exceptionally hard, durable surface that withstands prolonged exposure to moisture. Its composition of Portland cement and lightweight aggregate with heavy-duty fiberglass-mesh facers makes it an excellent fire and thermal barrier. This mold- and moisture-resistant cement panel is a substrate board, thermal barrier, and coverboard for commercial roofing applications.

Use it for a wide variety of roofing systems, including fully adhered, mechanically attached, and ballasted roofs using single-ply membranes, modified bitumen, fluid-applied, built-up roofing, spray foam, and metal.

Applications

• Use it as a coverboard in roofing assemblies. DEXcell Cement Roof Board protects and supports the roof membrane; provides increased fire, moisture, and mold resistance; and reduces the potential for penetration damage to the membrane.
• Use it to sheathe the roof side of parapet and penthouse walls. Ideal for green roofs and photovoltaic systems.

Advantages

• Excellent bond/pull-through/uplift values.
• Impact-resistant, extremely durable, and dimensionally stable.
• High compressive strength.
• Lightweight, cementitious core.
• Superior moisture resistance.
• Exceptional freeze/thaw resistance.
• Scores and snaps easily.
• Meets ASTM C1325.
• Meets UL Class 1 and UL Class A fire ratings for roofing systems up to unlimited slope per UL 790 and ULC CAN-S107.
• Use in accordance with a rated system, and DEXcell® Cement Roof Board provides a thermal barrier meeting IBC Section 2603.
• Resists the growth of mold per ASTM D3273 with a score of 10, the best possible score.
• DEXcell® Cement Roof Board has achieved GREENGUARD Gold Certification.