Corotop Blue 1.5mtr x 50mtr Breathable Membrane 140gsmThis three layer vapour permeable membrane is highly resistant to mechanical damages and outside factors including UV rays or high temperatures. It is characterised by high durability, guarantees comfort during application, even in difficult weather conditions. The product has also above average technical parameters in its class. The membrane dedicated on roofs with full or part boarding. Initial underlay for thermally insulated, ventilated, sloping