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DEXcell® Roof Board Products

One name for every application

Helping you build better

Need roof board options and technical expertise? We've got you covered. DEXcell® Roof Board products cover the entire spectrum of commercial roofing applications. We'll help you make the best product choices by providing unmatched technical expertise.


DEXcell® Glass Mat Roof Board

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DEXcell® Glass Mat Roof Board is recommended for mechanically attached systems, metal roof systems and wood shake underlayment. It’s also an excellent thermal and fire barrier. It’s manufactured with coated fiberglass facers and an enhanced moisture-resistant gypsum core. And it’s coated on the front, back and sides for easy handling.

Key Features

  • High-density coverboard/thermal barrier
  • Scores and snaps easily
  • Manufactured to meet ASTM C1177
  • Use as a part of a Class A, B or C roof covering

DEXcell® FA Glass Mat Roof Board

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DEXcell® FA Glass Mat Roof Board features a heavy-duty coated fiberglass facer and is ideal for fully adhered roof systems – from a vapor barrier substrate to the parapet wall. It is recommended for fully adhered single-ply membranes, modified bitumen (cold applied), fluid applied, metal, and spray foam. It’s also used on the roof side of parapet walls.

Key Features

  • High-density coverboard/thermal barrier
  • Heavy-duty coated fiberglass facers for improved handling, strength and adhesion
  • Scores and snaps easily
  • Manufactured to meet ASTM C1177

DEXcell® Cement Roof Board

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Whenever a building will be exposed to moisture or high humidity, DEXcell® Cement Roof Board is the smart choice. This board’s superior moisture resistance makes it suitable for nearly every roof system. It is manufactured of Portland cement, lightweight aggregate and glass mesh that provides an exceptionally hard, durable surface.

Key Features

  • Suitable for all roof systems, including, but not limited to, fully adhered single-ply membrane, mechanically attached roof systems, modified bitumen, built-up roof systems, fluid applied, metal, and spray foam. It’s also used on the roof side of parapet walls
  • Excellent bond/pull-through uplift values
  • Ideal for hot-mopped and torched applications
  • Superior moisture resistance
  • Impact resistant, extremely durable and dimensionally stable
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National Gypsum Company is the exclusive service provider for products manufactured by Gold Bond Building Products, LLC, PermaBASE Building Products, LLC and ProForm Finishing Products, LLC