VIEROSIL VEL is a water repellent, matt glaze for exteriors. It is based on acryl-siloxane resins in aqueous emulsion and inorganic pigments. It can be applied over all types of VIERO synthetic or natural based paints or coatings, with a maximum grain size of 1.2 mm. This product gives the surfaces a matt and cloudy appearance without changing the water vapour permeability of the coating giving at the same time good water- repelling properties. Different application tools allow to obtain different types of decorative effects. A proper use of this product doesn’t vary the overall breathability of the cycle.