Glidevale Protect VP400 vapour permeable underlay 1.5m x 50m

Protect VP400 Plus LR is a highly vapour permeable roof underlay. It offers the lowest vapour resistance of any type LR roofing underlay in its class, helping to avoid the risk of harmful condensation, whilst remaining completely airtight. With suitability for use across all pitched cold and warm roofs, the membrane provides a secondary line of defence against wind driven rain and snow, offering a high resistance to wind uplift to BS 5534, ensuring unrestricted use in Zones 1-5 throughout the UK and Ireland.