Cover boards
USG Cover Board
USG provides builders and project managers with high-quality cement board sheathing for superior performance. Our range of gypsum sheathing and glass-mat sheathing features moisture and mold resistance for enhanced protection. Browse our selection of fire-rated sheathing below.
Cover Board
Sheathing
Securock® Brand UltraLight Glass-Mat Sheathing
Ultralightweight 1/2 in. (12.7 mm) glass-mat sheathing with moisture and mold resistance—up to 15% lighter than other glass-mat sheathings
Securock® Brand UltraLight Glass-Mat Sheathing Firecode® X
Ultralightweight 5/8 in. (15.9 mm) Type X glass-mat sheathing with moisture and mold resistance—up to 15% lighter than other glass-mat sheathings
Securock® ExoAir® 430 Panels
Securock® ExoAir® 430 Sheathing Panel includes a factory-applied air and water membrane designed to provide superior protection for the building envelope.
Cover Brands
Gypsum
DensDeck® Roof Board
An exceptional fire barrier, thermal barrier, and re-cover board used in various commercial roofing systems.
DensDeck® Prime Roof Board
An exceptional fire barrier, thermal barrier, and re-cover board with a pre-primed surface to make the bond even stronger.
DensDeck® StormX™ Prime Roof Board
DensDeck® StormX™ Prime Roof Board is durable and is approved for use in assemblies meeting FM Very Severe Hail (VSH) Classification.
Frequently Asked Questions
Why are cover boards important in commercial roofing systems?
Cover boards add an additional layer of protection between the roofing membrane and insulation, helping improve system durability, moisture resistance, fire performance, and long-term roof protection. They also help enhance the overall strength and performance of commercial roofing assemblies.
What are the benefits of Securock® UltraLight Glass-Mat Sheathing?
Securock® UltraLight Glass-Mat Sheathing is designed to provide moisture and mold resistance while maintaining a lightweight profile that helps simplify handling and installation. Its durable construction supports long-term building envelope performance in commercial applications.
When should Firecode® X glass-mat sheathing be used?
Securock® UltraLight Glass-Mat Sheathing Firecode® X is commonly specified for projects requiring enhanced fire-rated performance while also providing moisture and mold resistance. It is often used in commercial wall and roofing assemblies where fire protection is a critical design requirement.