GlasRoc® Diamondback Tile Backer

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.

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.

CertainTeed’s GlasRoc® products feature unique Embedded Glass Reinforced Gypsum® (EGRG®) technology. This patented* technology combines a protective coating on the face, with reinforced glass mats embedded into a water-resistant gypsum core, positioned beneath a polymer-modified gypsum surface.
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  • Water-resistant, paperless surface that is designed to meet the requirements of the application. Eliminates the need for an additional moisture/vapor retarde
  • Numerous fire-rated assembly designs for safety and performance.
  • Moisture and mold resistance for protection and durability. Mold resistant rating of 10 (no mold)
  • Lightweight and designed to cut like regular gypsum board for ease of installation. Up to 50% lighter weight than cement backer boards