Walki - Model Active -Construction Membranes

Walk Active is a vapour variable membrane made from a non-woven polypropylene and a functional film layer. The membrane is dual purpose. In the winter, when it is warmer indoors than outdoors, water vapour tends to flow from inside to outside. Then the functional film layer acts as a vapour barrier ensuring that virtually no vapour gets into the structure. In the summer, vapour flow generally turns from outdoors to indoors. The polyethylene-copolymer film opens and allows water vapour to flow through the structure, allowing extra moisture to leave freely.