One-component, transparent, aliphatic, polyurethane coating used to achieve satin-matt finish over ISOFLEX-PU 650. It is watertight, continuous (without seams or joints), flexible and UV-stable. Does not turn yellow over time and shows excellent mechanical strength and chemical resistance. The system of ISOFLEX-PU 650 and VARNISH-PU 650 MF offers an effective waterproofing and protection solution for various types of existing surfaces, such as old tile layers, natural stone, glass blocks, wood, concrete, etc. Certified according to EN 1504-2 and classified as a coating for surface protection of concrete. CE marked.