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Protect VP400 Roofing Underlay 1 x 50m

Product Code: 55379

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


4.75 5 4

QtyPrice per item
1 - 2 £86.99
3 - 5 £84.99
6 + £82.99

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Protect VP400 Roofing Underlay 1 x 50m 4.8 5 4 4
glad I chose the heavy duty fitted today on my roof and can see the benefits. I am a perfectionist and only use decent products. 29 Nov 2014
A1 Roofing Underlay 1 x 45m I was a little unsure about using this, even more so when I opened the packaging as its very thin, however I soon changed my mind. I've put this under felt tiles, it made the job so much easier, mainly because you can just staple it down, I ended up leaving it on for a week before I could felt tile the roof due to the weather turning bad, and it performed brilliantly (I'm building a 4m x 5m summer house with a pitched roof) the waist helped me keep the rest of the build waterproof covering the doors and window openings while i built them. I'll never use anything else, brilliant stuff. 3 Jun 2014
Breathable membrane Good quality product , very easy to lay , held out water for about two weeks before showing signs of leakage , better than alot of other similar products on the market. Overall opinion , good and easy to use but expensive. Get the tiles / slates on the roof as soon as laid 28 Oct 2012
VP400 Its tough, easy to cut with a sharp stanley knife, and does what it says on the tin. Buy the 1.5 m for £20 it gives a better overlap and is much cheaper on a sq M basis 22 Oct 2010
  • 2015-03-28T15:15:58.080-05:00
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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 m
Total Product Weight 9250 kg