PROVA BOARD® PLUS is a lightweight, high-density tile backer board that is quick and easy to install. The 100% waterproof XPS (extruded polystyrene) core is resistant to vapor pressure and does not support mold growth. The XPS core is sandwiched between tightly woven mesh and layers of cementitious coating. Install with screws and fasteners and joint sealant to guarantee a watertight installation.
