BETONCRYLL SEMITRASPARENT is a special acrylic protective coating for concrete with a coloured semi¬transparent finish. The product consists of modified acrylic resins in water dispersion which provide a waterproof protective coat resistant to frost thaw cycles and to penetration of CO2 and SO2 gases present in smog and rain, that are today, the worst enemies of concrete because they cause the carbonation and the consequent rusting of concrete iron rods. The product also prevents the development of moulds and algae. Its high vapour permeability allows BETONCRYLL SEMITRASPARENT to be used also on masonry, fiber cement and stone. It has a low odour level, is non inflammable and is friendly to both humans and the environment.