CertainTeed. Protect surfaces in high-moisture areas with GlasRoc Tile Backer featuring Embedded Glass Reinforced gypsum (EGRG) technology, which combines reinforcing glass mats, fully embedded into a water-resistant gypsum core and a textured acrylic surface coating. The coating results in stronger adhesion of latex-modified thinset mortars for tile installations, the maker says. The board’s moisture-blocking capabilities eliminate the need for a separate moisture barrier required with traditional cement boards. The flat and uniform substrate resists delamination, is lighter than traditional boards, and can be scored and cut with a utility knife. 800.233.8990. www.certainteed.com.