Powerlon UltraPerm Standard Breather Membrane Roof Felt is a high-performance roofing membrane designed to protect pitched roofs from water ingress while allowing moisture vapour to escape. Supplied in a 1m x 50m roll, this breather membrane is suitable for use in both cold and warm roof constructions. Its robust, lightweight material makes installation straightforward, enhancing roof ventilation and improving building energy efficiency. The Powerlon UltraPerm Standard is highly durable and resistant to tearing, making it ideal for a range of domestic and commercial applications within the roof felt category.