GoBoard® by Johns Manville is an ultra-lightweight, waterproof and durable tile backer board that is easy to cut and install.
National Gypsum Company
National Gypsum PermaBase® BRAND cement board provides an exceptionally hard, durable surface that is able to withstand prolonged exposure to moisture.
USG - Durock®
Durock® Brand Cement Board is a high-strength ceramic tile backer board that delivers a water-durable tile base for walls, ceilings and countertops anywhere tile is used.
USG - Fiberock®
Fiberock® Brand Panels are manufactured from a unique combination of gypsum and cellulose that provides superior strength.