Polypropylene vapor barrier USB MICRO

for roof

USB MICRO is a 3 layer vapour barrier that is impermeable to water and air. Its top and bottom layers are made of non-woven polypropylene fabric which protect the middle low breathability polypropylene microporous film. The three layers are joined and heat welded together. The top layer is treated to make it water repellent so that rain water runs directly off it when it comes into contact with the surface of USB MICRO. In very heavy rain which cannot be diverted easily, the middle membrane can also provide the necessary impermeability. The product’s grammage (155 g/m²) makes USB MICRO the essential vapour barrier for installing a roof which meets current standards but also provides good value for money.