Protect Protect A1 Roofing Underlay 1 x 15m Product Code: 31617

Impermeable roofing underlay offering major benefits over traditional bitumen and reinforced plastic felts. Twin-ply construction of polypropylene non-woven spunbound layer and PP film. Unaffected by temperature change. Absorbent undersurface prevents condensation drip-off. Lightweight, easy to cut and install. Can be used in all pitched roof constructions, whether insulation is at ceiling joist or rafter level or as a temporary cover for up to 3 months.


  • Weight: 145g/m²
  • Non-Permeable ‘3rd Generation’ Underlay
  • Suitable for all Pitched Roof Constructions
  • Waterproof & Wind-Tight


EN 13859.
Additional Information
Technical Specification
  • Brand : Protect
  • Product Length : 15 m
  • Product Type : Protect A1 Roofing Underlay
  • Product Width : 1 m
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
  • CE Standard (Tested to EN...) : EN 13859.
Product Contents
Delivery & Returns


Standard delivery service up to 3 working days: €8.95

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€20.45 Incl. 23% VAT

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Protect Protect A1 Roofing Underlay 1 x 15m is rated 4.7 out of 5 by 67.
Rated 5 out of 5 by from Really easy to use, reliable Really straightforward to use, and easy to cut. Coped with the recent downpours admirably. Recommended
Date published: 2018-06-23
Rated 5 out of 5 by from Used to replace old felt Needed to re-roof a section of a felted roof. Used this product directly on rafters as described in the instructions - it is a very good product and easy to use, much better than old style felt. Double layered it with a 50/50 overlap so no nail heads showing and joined edges to adjacent old felt with No Nonsense flashing tape (another really brilliant product). Paint the old felt with Bitumen paint (another great product) so the flashing tape adheres to the felt. Use some heat from hot air gun to make tape really stick (but be careful not to melt underlay). Product is very good value for money.
Date published: 2018-05-10
Rated 5 out of 5 by from Roofing underlay Wanted to keep the roof dry until fitting shingles,this did the job great !
Date published: 2018-04-27
Rated 5 out of 5 by from roofing felt This is a good price for the amount of felt. Was easy to use and flexible and light.
Date published: 2018-02-12
Rated 4 out of 5 by from Better than felt A good product which is so much easier to install than roofing felt, and should last longer.
Date published: 2018-02-06
Rated 5 out of 5 by from Real Deal Great product at a great price. Light but robust and easy to work with. Repaired old felt on a first floor extension.
Date published: 2017-10-15
Rated 5 out of 5 by from Fantastic Lovely roofing fabric , great quality and robust , easy to work with and far better than any of the mineral shed felts , doesn’t rip easily or fall apart . A bit slippery to walk up before the batten is secured ! Excellent size of roll for a good price
Date published: 2017-10-10
Rated 4 out of 5 by from Good underlay Very good product for the price easy to work with would buy again
Date published: 2017-09-20
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