Tyvek Supro Breather Membrane Felt Underlay 1.5m x 50m (75m2/Roll)

Tyvek Supro Breather Membrane Felt Underlay is a vapour-permeable pitched roof underlay designed to deliver dependable resistance against wind-driven rain and external moisture ingress. Manufactured from high-performance composite layers, it maintains tensile strength and dimensional stability during installation and long-term service. The membrane supports controlled vapour movement from the loft space while maintaining a water-resistant external barrier suitable for ventilated and non-ventilated cold and warm roof constructions. Its robust construction enables handling, cutting, and fixing without excessive tearing, aiding reliable installation across varying roof geometries. It is supplied in a 1.5m × 50m roll providing 75m² of coverage.