All purpose for shower trays, baths, sinks, toilets, windows, doors worktops & more. All surface, for use on porcelain, metal, vinyl, laminate, stone, ceramic, stainless steel, granite, wood and glass. 30 min water-ready, can be exposed to water in as little as 30 minutes based on 5mm bead at 21oC and 50% humidity. Mould-resistant, no mould, no mildew, no worries. Long-lasting performance, won't yellow, shrink or crack over time. 100% Waterproof