Schluter® KERDI-BOARD-SC Shower CurbA pre fabricated waterproof shower curb made from KERDI BOARD replaces wood or mortar curbs that take time to build and are prone to water damage. Set it in thin set, seal joints with KERDI BAND, and tile over it like the rest of the shower. Extruded polystyrene (XPS) construction fully waterproof through the entire curb, not just surface treated. Integrates directly into your Schluter shower assembly Pre shaped to standard shower curb dimensions no