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Protect VP400 Roofing Underlay 1.5 x 50m

Product Code: 98160

50m. Protect VP400 vapour permeable roofing underlay has excellent nail-tear and tensile strength while remaining lightweight and easy to cut. Used as an underlay for warm or cold roof construction, it helps to avoid the risk of roof-space condensation. Easily marked with a chalk line. 100% waterproof with unrestricted use in windy areas. UV and heat-resistant. BRE certified for all pitched roofs.

  • Weight: 180g/m²
  • Vapour Permeability / Resistance 0.11MNs/g
  • High Performance & Watertight
  • Use in Warm or Cold Pitched Roof Constructions on Any Roof Shape or Building Type
  • View more information



QtyPrice per item
1 - 2 £119.99
3 - 5 £114.99
6 + £109.99

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Rated 5 out of 5 by Tough as old boots. Very strong and durable membrane. If you want to do a quality job then use this. Easy to work with and will tolerate stainless steel staples to fix to rafters. I have gone over to this from tyvek. Shame there is not a reflective alternative. 23 May 2015
Rated 5 out of 5 by Protect 'felt' roofing product Good as the main brands and just as easy to use. A little expensive given it is not one of the main brands. On low pitch roof I suggest using 2 or 3 layers to stop any capillary action. 19 Apr 2015
Rated 5 out of 5 by Strong membrane Lightweight easy to use. Stong and won't tear unlike some cheaper roofing membranes 9 Nov 2011
Rated 5 out of 5 by best breather membrane Excellent product really tough and definately waterproof as this rubbish summer weather has proved. Wouldn't purchase any other membrane now. 30 Jul 2011
  • 2015-11-27 T13:35:55.904-06:00
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Colour Grey / Blue
Manufacturer Guarantee 25 years
Manufacturing Standards BRE
Pack Size 1
Product Length 50 m
Product Type Protect VP400 Roofing Underlay
Product Width 1.5 m
Total Product Weight 13750 kg