Description: UltraTile ProFlex SPES is a polymer modified adhesive which provides enhanced performance and high bond strength including installations subject to moisture. It has extended set properties for contractors who prefer a longer pot life. Able to take light foot traffic within 18 hours of installation depending upon temperature and substrate. Substrates: Suitable for fixing onto Concrete, Sand/cement screed, Tile backer boards, Cement faced fibre boards, Anhydrite/calcium sulphate/gypsum based screeds, Tile on Tile, Firm and stable plaster, Plasterboard, Sand/cement render, Concrete brick/block, Hard vinyl tiles, Flooring grade asphalt.