Keraset is a grey or white powder composed of cement, sands of selected granulometry, synthetic resins and special admixtures according to a formula developed in MAPEIs Research Laboratories. Keraset, mixed with water, becomes an easily workable mortar, that can be applied even vertically without slumping and without letting the tiles slip. Keraset hardens without appreciable shrinkage attaining a good resistance, adhering perfectly to all materials normally used in the building industry.