VAT Inc Ex

VP400 Protect Membrane 1.0x50m

In stock
Product Code
VP400150
VP400 Protect Membrane is a highly vapour permeable roof underlay.
It offers the lowest vapour resistance of any Type LR roofing underlay in its class, and yet it remains completely airtight. It is suitable for use in all pitched roofs. As the airtightness of buildings and dwellings continues to improve due to better workmanship and new practices, it is ill advised to allow uncontrolled air movement within the structure, including through a roof underlay in roofs with no vapour control or air barrier layers.
One of the primary functions of roof underlays is to help manage the wind load pressures on the roof. In order to achieve this the underlay should have enough mechanical properties to be able to deflect the wind load pressures safely over the structure. Another essential property is that the underlay be water and airtight. Air permeable underlays allow air to penetrate the membrane making it much more difficult to withstand the maximum wind load pressures and driving rain without other surface treatments.


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£104.90 £87.42

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Product Overview

BENEFITS
• Highly vapour permeable, but completely airtight.
• Completely watertight >7.0m 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’ use for wind uplift in all exposure conditions in the UK and Ireland.
• BMTRADA Independently certified.
• Helps to avoid condensation risk in the roof space in accordance with BS 5250 and NHBC requirements.