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Powerlon Air Barrier Membrane 1.5m x 50m is a high-performance, vapour-permeable membrane designed for use in building envelopes to improve airtightness and energy efficiency. Suitable for domestic and commercial construction, this air barrier membrane helps prevent uncontrolled air leakage while allowing water vapour to escape, reducing the risk of condensation within walls and roofs. Easy to handle and install, Powerlon Air Barrier Membrane offers reliable protection against wind-driven rain and air infiltration, supporting compliance with building regulations for thermal performance.