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.

• Moisture and mold resistant
• EdgeTech reinforced edge allows for more secure application of fasteners closer to the edge
• Easy to cut-speeds up installation
• Interior and exterior use
• Industry's lowest water-absorption rating (per ASTM C473) delivers to a better tile bond
• UL GREENGUARD Gold certification for low chemical emissions to help indoor air quality
• Approved as a substrate for tile, stone, thin brick, and stucco