This is a universally usable impregnator based on water-repelling siloxane compounds. The product contains solvents and has a low viscosity. Lithofin SPLASH-STOP penetrates into porous surfaces and forms a thin coat inside the capillaries. This coat prevents the penetration of water and dirt, forcing it to remain on the surface. Surfaces stay clean longer and become easier to maintain. The water permeability is hardly affected. The appearance of the surface is not, or only slightly, altered. Lithofin SPLASH-STOP is UV-resistant and does not yellow.