The Damar Gripset Betta Grey Cement Compound is perfect for water storage tanks, basements, cellars, building foundations, fish ponds, water features and pools. This compound can be used to block running leaks and seeping water through cracks, holes and joints in concrete and masonry structures.It takes approximately 30 seconds to set after mixing and applying to running water. Compound is suitable for use with Gripset Betta cemseal and fix for waterproofing underground areas prone to negative water seepage problems. It comes in a 1 kg pail.