Glidevale VP400

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 preventing air leakage and maintaining a high level of thermal performance.

These airtight membranes are suitable for use across all pitched cold and warm roofs, the airtight layer membrane provides a secondary line of defence against wind driven rain and snow, offering a high resistance to wind uplift to BS 5534, passing vapour checks throughout the UK and Ireland

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.

• Completely water and air tight with >7.0m head of water resistance.

• Strongest underlay in its class & weight range.

• UV and heat resistant.

• Tough and durable.

• Can be used as temporary roof covering.

• Has unrestricted wind uplift resistance across the UK and Ireland – Zones 1-5 at 345mm batten gauge, without the need for additional sealing tapes.

• Helps to avoid condensation risk in the roof space in accordance with BS 5250 and NHBC requirements.

• Resistance to wind pressure – 1676Pa, tested to BS 5534.

• Fully independently certified by BM TRADA.

• UKCA and CE marked.