EVO-STIK Rapid Set Floor & Wall Flexible Tile Adhesive is a cement-based, grey flexible tile adhesive that will set in just two hours. This fast-drying tile adhesive is suitable for both wall and floor applications due to its highly flexible formula. It can be used to fix ceramic tiles, porcelain, natural stone, quarry, slate, granite, terrazzo and vinyl tiles, and can be applied directly onto cured concrete and screeds, tile backer board, over tiles and onto wood flooring. Plus, it is waterproof and frost-resistant so it's perfect for interior and exterior use. The rapid set flexible tile adhesive can also be used with most domestic underfloor heating systems, and is suitable for thin and thick bed applications to a maximum depth of 12mm. This 20kg bag will cover 7m², dependent on the nature of the substrate, the adhesive bed thickness and the type of tile.