Vent3® Premium Performance Breather Membrane (135gsm | 1.5m x 50m) by Cromar Sold out £42.50 + VAT 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out Vent3® is a high-performance breathable roof underlay felt for cold and warm roof application and requires no ventilation.
