GlasRoc® Tile Backer is a gypsum tile substrate panel for walls and ceilings, specially formulated with a water-resistant core to meet the demands of high-moisture areas. For greater convenience, GlasRoc Tile Backer allows you to apply tile using thinset or mastic compounds.
Valued for its mold resistance, it is well-suited for tile and non-tile installations in wet and non-wet applications, and in areas of high humidity. It also offers excellent fire-resistance properties, and can be used in numerous fire-rated designs and assemblies.
Available in 1/2" (12.7 mm) and 5/8" (15.9 mm) thicknesses. See the Technical Info table below for available widths and lengths. GlasRoc Tile Backer is up to 30 percent lighter in weight than conventional cement backer boards. It cuts like regular gypsum panels, is easy to handle and install, and offers reduced surface alkalinity versus conventional cement board. 
5/8” GlasRoc Tile Backer (Type X) features a specially formulated core for use in UL and ULC fire resistance-rated designs
Achieves best possible score of 10 for mold resistance per ASTM D3273
Meets ASTM C1178, which is recognized by the Tile Council of North America (TCNA)
Low VOCs; GREENGUARD Gold Certified
Produces low dust; excluded from “Table 1” of the OSHA Crystalline Silica Rule
Lifetime Limited Warranty for residential applications
20-Year Limited Warranty for commercial applications

Technical Information

GlasRoc® Tile Backer and GlasRoc® Tile Backer Type X Panels are used in wet, non-wet, or high-humidity areas. These panels are typically used for adhering ceramic tiles to walls in bathrooms, shower and tub enclosure walls, kitchens, laundry rooms, and utility rooms. The GlasRoc Tile Backer Panels are designed to be used for walls, ceilings, and countertop applications. 


Applicable Standards and References

-ASTM C1178
-Gypsum Association GA-216
-Gypsum Association GA-214
-Tile Council of North America’s TCNA Handbook for Ceramic Tile Installation
-ANSI’s American National Standard Specifications for the Installation of Ceramic Tile

Installation of GlasRoc® Tile Backer should be consistent with methods described in the standards and references noted.

Please see the GlasRoc® Tile Backer Brochure for additional recommendations, requirements, and installation instructions.

Warranty Details

Please use the attached links for complete warranty documents and details.

Sustainability Information

CertainTeed takes pride in providing the best solutions to make the spaces where we work, live, and play healthier and safer. This means offering high-performing products that create better living environments.

Our products improve building energy efficiency and reduce building energy consumption for the life of the structure. As a result, they help conserve nonrenewable energy sources, decrease dependence on hydrocarbons and lower greenhouse gas emissions.

CertainTeed’s ongoing commitment to sustainability in our manufacturing operations incorporates the principles of industrial ecology, managing energy and water, and reducing waste.


Our ecomedes Sustainable Product Platform allows you to quickly access the product information and certifications you need, calculate contributions to LEED and other green building rating systems and create and save a group of products using the project feature. The information is free to access and always up to date.

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