ProBreathe® A2 is a fire-resistant, airtight, and vapour-permeable wall membrane designed for modern construction. This high-performance woven glass fibre membrane with a PU coating ensures superior protection and energy efficiency for the building fabric. ProBreathe® A2 is an airtight woven glass fibre membrane specifically engineered by the Proctor Group to provide exceptional performance in wall constructions. This innovative product successfully combines breathability, good water resistance, and airtightness in one membrane. Its primary function is to act as a robust air barrier while allowing moisture vapour to escape from within the building structure, preventing interstitial condensation. ProBreathe A2 air membrane is designed for use either directly onto a sheathing board or over insulation, making it a versatile solution for various construction applications. Key Features Superior Fire Safety: Achieves a Reaction to Fire classification of A2-s1, d0, providing a fire-resistant layer to the external wall. Optimal Airtightness: Creates a highly effective air barrier, reducing heat loss and improving the energy efficiency of the building. Vapour Permeable: A highly vapour permeable membrane that allows moisture to exit the building fabric, minimising the risk of mould and structural damage. Excellent Water Resistance: The membrane with a PU coating offers good water resistance, providing temporary protection of the building until the primary external covering is installed. Durable Construction: The woven glass fibre membrane construction ensures high tensile strength and durability during and after installation. Versatile Installation: Can be installed free-hanging or onto a substrate such as a sheathing board. Applications: Suitable for use in rainscreen/facade construction. Suitable for applications over 18 m (11 m in Scotland).
