Diamondback Tile Backer. The superior tile substrate for walls, ceilings, and countertops.

Diamondback Tile Backer is used behind tiles in wet areas such as bathrooms, laundries, utility rooms and kitchens. Quarter-inch (6.4mm) Diamondback Tile Backer is suitable for use as an underlayment for countertops and residential and light commercial flooring applications. Diamondback Tile Backer Type X provides the same moisture resistance as Diamondback Tile Backer, plus it has a specially formulated core for use in fire resistance-rated designs. These products consist of a high performance, water-resistant gypsum board produced with CertainTeed’s patented, proprietary Embedded Glass Reinforced Gypsum (EGRG) Technology.

Technical Information

Installation

Applicable Standards and References

• ASTM C 630, ASTM 1396, ASTM C 1178
• Gypsum Association GA-216
• Gypsum Association GA-214
• CAN/CSA-A82.31
• Tile Council of North America’s TCA Handbook for Ceramic Tile Installation
• ANSI’s American National Standard Specifications for the Installation of Ceramic Tile

Installation of Diamonback boards should be consistent with methods described in the standards and references noted.
Please see the Diamondback Brochure for complete installation instructions