Mapei Keraquick S1 Zero in white is a 20kg bag of high-performance, quick-setting, deformable cementitious adhesive for use with ceramic, porcelain and natural stone tiles and mosaics. Suitable for interior and exterior walls and floors, this tile adhesive can be used to bond tiles to a range of suitably prepared substrates, including calcium sulphate-based screeds, concrete, plywood overlaid floors, existing unglazed ceramic floor tiles, cement-based renders, gypsum plaster, plasterboard and tilebacker boards. It is rapid setting allowing the tiles to be grouted after 2-3 hours. Keraquick S1 Zero is ideal for use in wet rooms, swimming pools and balconies, and offers no vertical slip in the presence of humidity.