USG’s new Durock Brand Glass-Mat Tile Backerboard is a tile and flooring solution comprised of a water-resistant gypsum core with a fiberglass mat facer and back. Additionally, the front of the panel has a proprietary cementitious coating. According to the company, these features work together to resist against moisture, making it an ideal product for use in wet areas as a tile substrate. The product is lightweight and easy to score, snap and fasten.