What are the ProTile™ shower trays, curbs, ramps, seats and building panels made of? Can they really support the tile assembly?

ProTile™ shower trays, curbs, ramps, seats and building panels are made of closed cell, extruded polystyrene (XPS) foam with higher compressive strength than typical expanded polystyrene (EPS) products. ProTile™ components provide a 100% waterproof, lightweight yet durable and stable substrate for tile and stone. After the tile is installed and grouted, a ProTile™ shower assembly will support all the loads typical of tiled shower systems. ProTile™ curbs and curb-overs will easily support the weight of glass doors or glass block walls.