Durock 1/2" x 3' x 5' EdgeGuard Cement Board, $13.99 USD/Box, LL Flooring (Lumber Liquidators)

Durock provides a reliable cement backerboard for tiles and exterior finishes. Its light weight makes it suitable for high-moisture areas, offering a mold-resistant substrate. It can be used indoors or outdoors without rotting, warping, or disintegrating. Made of noncombustible materials, the board is highly preferred for tile installations. It serves as a strong base for tubs, showers, floors, and countertops in both new constructions and renovations. It can be easily installed over either wood or steel frames using corrosion-resistant fasteners. Once joints are treated, tiles are applied with latex-fortified mortar or organic adhesive. Popular for finishes involving tile, stone, or thin brick on building exteriors.