48-in x 32-in x 1/2-in Water Resistant Polystyrene Foam Backer Board H138

Kerdi-Board is a multifunctional tile substrate and building panel that can be used for creating bonded waterproofing assemblies with tile coverings. Kerdi-Board is made from an extruded polystyrene foam panel, with a special reinforcement material on both sides and fleece webbing for effective anchoring in thin-set mortar. It can be used in the creation of a broad range of building elements, such as showers and bathtub surrounds.