Roof Board

National Gypsum Products

DEXcell Cement Roof Board is a lightweight moisture- and mold-resistant cement board designed for use as a cover board or thermal barrier in all commercial roofing applications. It provides a fire barrier and a thermal barrier. Manufactured of Portland cement, lightweight aggregate, and glass mesh that provide a hard surface. It is produced in 7/16-inch thickness and 4-feet wide in 4- and 8-foot lengths. Product family includes glass mat roofboards.

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