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Glass-Mat & GlasRoc Sheathing

Glass-Mat Sheathing is a noncombustible, moisture- and mold-resistant panel that offers an improved coated fiberglass facer mat to maximize coverage of air/water barrier systems. Designed for use under exterior claddings where conventional gypsum sheathing products have traditionally been used, these panels are warranted for up to 12 months after application.

GlasRoc® Brand Sheathing High-Performance Exterior Sheathing* with EGRG Technology. Available in 1/2″ (12.7 mm) and 5/8″ (15.9 mm) Type X Long term protection to weather exposure. A superior water resistant surface that does not inhibit water vapor permeance. Excellent fire resistance properties, and numerous fire rated assemblies. Mold and moisture resistance. Compatibility with most exterior wall systems and applications. Conformity to design and code requirements. Strength – with enough flexibility to bend to curved surfaces. A lightweight sheathing that cuts like regular gypsum board and is easy to handle and install – with minimal skin irritation due to fully-embedded glass mat. GlasRoc® Sheathing is the next generation of the industry standard for high-performance, weather-resistive, gypsum-based sheathing. CertainTeed provides a 12 month limited warranty against exposure and a 5 year limited warranty assuring product performance. So, relax – you have the protection of GlasRoc Sheathing.

CertainTeed logo
Lafarge logo
National Gypsum logo
Georgia Pacific logo
1/2in Exterior
Type Dimensions
Exterior Gypsum Sheathing 4' x 8'
Cement Board 3' x 5', 4' x 8'
Georgia Pacific Densglass 4' x 8'
Certainteed GlasRoc 4' x 8'
5/8in Exterior
Type Dimensions
Firecode/Exterior Gypsum Sheathing 4′ x 8′
Cement Board 4′ x 8′
Certainteed GlasRoc 4′ x 8′
Georgia Pacific Densglass 4′ x 8′

All other types and sizes are special order.

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