National Gypsum PermaBASE® 1/2 x 3' x 5' Cement Board

PermaBASE Cement Board is a rigid substrate made of Portland cement, aggregate and glass mesh that provides an exceptionally hard, durable surface that withstands prolonged exposure to moisture. Use PermaBASE as an underlayment or backing surface for tub and shower surrounds, floors and a variety of other interior and exterior applications. The EdgeTech reinforced edges allow for more secure application of fasteners closer to the edge.