Roof deck


Reliable performance for high value roof decks


A higher-value infrastructure requires a high-performance roof that extends serviceable life against prolonged exposure.

For specifiers, construction managers and installers, DEXcell® Cement Roof Board is ideal for all roof systems and protects against fire, moisture, hail and wind, all backed by a solid warranty.

Featuring an excellent bond and a lightweight cementitious core, DEXcell® Cement Roof Board is also FM Class 1 and UL Class A fire-rated.

Recommended products

View Products

Roof Board

Learn More

Roof Board

DEXcell® Cement Roof Board

View Product
8 Design Center

Designs & Resources

Find product details and technical documentation in the Design & Resource Center.

Explore Now
Expert connection 800 national 560x320 2024

Expert Connection

Discuss your project with PermaBASE experts who can help guide your product selection.

Get In Touch

Need Technical Information?

Call 1-800-NATIONAL®

National Gypsum Company is the exclusive service provider for products manufactured by PermaBASE Building Products, LLC.