The protective systems RECKLI OS-D, OS-HO and OS-Premium are suited for the impregnation of fresh concrete. They permeate the top layer and chemically bind with it. Since the impregnation forms a film, the surface pattern and coloring of the concrete remain the same. RECKLI OS-Premium is a solution-containing impregnation, OS-D and OS-HO are watery protection system. All three products guarantee a UV-resistance concrete impregnation.