Diffusion-open facade membrane made of dimensionally stable polyester spunbonded fabric with UV-resistant TPU coating (without print). For the sealing of exterior wall insulation on partially open facades. Due to the UV-resistant exterior coating, it is mainly used as a facade sheet for facade cladding with shadow joints as well as partially open facade cladding with open joints of up to 40 mm and a joint proportion of up to 40 % of the total surface.