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Protect A1 Roofing Underlay 1 x 45m (31795)

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. BRE and Wimlas certified.

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

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£32.49INC VAT

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Protect A1 Roofing Underlay 1 x 45m is rated 4.7 out of 5 by 67.
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Rated 5 out of 5 by from Works and does what it should. I have used it for insulating ground floor wooden floors from cellar doing sandwich with eco knauf earthwool insulation. very well went no draft but also breathable. great product strong roofing felt and great price!
Date published: 2016-12-06
Rated 4 out of 5 by from Great product The felt under my roof tiles had disintegrated and had large holes so wanted a cost-effective replacement. As the roof is three storeys up, carrying and fitting this lightweight roll was a doddle. Can't comment on durability but it certainly is easy to install.
Date published: 2016-12-05
Rated 5 out of 5 by from Easy / clean to use Only just installed this, so can't vouch for reliability/performance yet (so have given it 5 sars, will amend if I have any problems). Nice clean, light weight and very easy to use, now I've used it I'm disappointed that I didn't have it for the last shed I built, but retro fitting would be too difficult.
Date published: 2016-12-03
Rated 5 out of 5 by from Does what it says Easy to handle, cuts cleanly and most importantly strong breathable and waterproof. Does what it says on the tin.
Date published: 2016-11-22
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What is the recommended method of fixing this membrane to the roof?

I am re-roofing a flat roof (very little slope) and want to use a breathable membrane beneath the cap-sheet, but need to know how to fix it. Thanks.
Asked by: Shed1Brum
Hello Shed1Brum, You could possibly use some Double Sided Membrane Tape. Here's a link: http://www.screwfix.com/p/double-sided-membrane-tape-50-x-10m/23552?_requestid=176978 Thank you for using Q&A.
Answered by: LMac
Date published: 2017-01-27

Is this felt suitable for zone 1 areas

Asked by: Deanobreeze
Hi Deanobreeze, Our supplier has advised 'Yes the A1 product is suitable for all wind uplift zones'. Thanks for using Screwfix Q&A.
Answered by: JTremain
Date published: 2016-09-10

A1 roofing underlay

My builder has discovered that rain water penetrates underlay when underlay is in direct contact with another surface be it overlapped underlay or rafter or any wooden surface. Writing is right way up etc so its not upside down ! Can anyone expain please ?
Asked by: Welsh1Gilly

Can you use torch on felt on top of this?

Asked by: Anonymous
Hi, This product will not be suitable as it is made of polypropylene and as such will shrink and melt if in contact with heat. thank you for using Q and A.
Answered by: mailliw
Date published: 2016-04-28

Is this membrane UV stable?

I want to use this item as a breather membrane on a timber clad garden building. I want to use an 'open joint' method for the cladding but the membrane needs to be waterproof and UV stable for this application. please confirm.
Asked by: Tomabc
Hi Tomabc, Unfortunately this product would not be suitable for this application with only having 3 months of direct exposure listed. Thank you for using Q and A.
Answered by: mailliw
Date published: 2016-04-25

Being thick sorry but which way up do you pay it ? Is it the writing side that's waterproof? Thanks

Asked by: Jules7jools
Hello Jules7jools, The writing will be facing the "outside" once installed. Thank you for using Q and A.
Answered by: Chubbtonk
Date published: 2017-02-12

Can this be used before fitting a shingle roof to log cabin

Asked by: Daz10011
Hi Daz, Unfortunately we wouldn't know whether it is able to be used with shingle roofing or not, however if you contact our supplier Glidevale Ltd on 0161 9055700 they may be able to assist you further. We'd also recommend contacting a suitably qualified tradesperson for advice. Hope this helps.
Answered by: WillFarrell
Date published: 2017-01-06

Great Value Product PROTECT A1 ROOFING UNDERLAY 1 X 45M (

Great Value Product PROTECT A1 ROOFING UNDERLAY 1 X 45M (. Can I use this on a garden shed , the felt now off and water is getting in ? Thanks
Asked by: Anonymous
Hello Anonymous,this cannont be used as shed roofing felt thank you for using Q and A.
Answered by: jboon
Date published: 2016-11-13
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Specification
Manufacturer Guarantee 1 Year Guarantee
Pack Size 1
Pieces in Pack/Case 1
Pieces in Pack/Case 1
Product Length 45 m
Product Type Protect A1 Roofing Underlay
Product Width 1 m