A UV-resistant foil is particularly suited for exterior wall constructions with open gaps in the brickwork The product is a watertight, vapour-open membrane composed of a polyester layer with a special coating. The water vapour permeability (WVP) is > 1400 g/m²/24h; S_d =< 0.02 m.  The product has a long-lasting UV stability.


A UV resistant membrane is employed as a watertight, extremely vapour-permeable layer on the cold side (generally the outside) of exterior wall structures in both new buildings and renovation work. This membrane is completely watertight and can therefore be applied directly onto hard surfaces. The foil can also be used in special structures where the foil is also exposed to UV radiation in the long term.