A liquid rubber waterproofing designed for use under ceramic tile and stone in intermittent wet areas such as bathrooms spas and kitchens. Watertight is specifically designed for residential applications to protect the substrate behind the tile or stone from water damage which could lead to costly repairs and the growth mold and mildew. Whether over cement board, plywood or gypsum wall board, Watertight applies like paint and is installed easily, ready for tile in just two hours after installation. Available in two packaging sizes and equipped with antimicrobial product protection, LATICRETE 9237 offers protection and insurance for just pennies per square foot.