Roofshield is a low vapour resistant, air permeable and highly watertight breather membrane designed to be fixed beneath tiles and slates as a pitched roof underlay creating a secondary barrier to rain, wind and snow. Roofshield eliminates the need for a vapour control layer or ventilation hardware fitted to the roof. Roofshield’s unique and patented meltblown core enables high levels of airflow and transport of moisture vapour from the roof space, making the formation of condensation virtually impossible and therefore eliminating the occurrence of interstitial condensation in pitched roofs. Features and Benefits UV & Water Resistant Low Vapour Resistance Air Permeable Hydrophobically treated No vapour control layer required Eliminates low- & high-level ventilation Product Specifications Length: 50m Width: 1000mm Coverage: 50m2 Vapour Resistance: 0.065 MNs/g Air Permeability: 34.4 m3/m2.h.50Pa