Jimbo63464 Posted October 9, 2023 Share Posted October 9, 2023 We are currently in the process of having our roof replaced. We have used what we thought was a premium breathable felt with clay Broseley tiles. The roofers have stripped off the roof at the front and back and re-felted the front with suitable Batton spacing ready for the tiles. As far as we are concerned once the roof had the new felt and battons we (roofer and I) thought that the house was sufficiently water tight as a temporary measure while the dormas were completed at the back of the house. With some heavy rain the felt is leaking like a sieve. It is as if it is coming through every nail hole and running down the rafters to the wall plate onto the ceilings below. The manufacturer has come out and their guys who came out admitted that they have had some issues with the product. They then have spent over 2 weeks testing the felt they took from our roof but have now come back and said they don't expect it to be waterproof and it is only a secondary water proof layer. This seems like BS to me. Anyone else had any issues or advice they can offer?? Please! Link to comment Share on other sites More sharing options...
nod Posted October 9, 2023 Share Posted October 9, 2023 They are correct The primary function Link to comment Share on other sites More sharing options...
Jimbo63464 Posted October 10, 2023 Author Share Posted October 10, 2023 I acknowledge that it is secondary, however if the felt layer is not waterproof then I am not sure on the point of having it is? We have had a reply from the manufacturer and they have admitted it failed their 'water hold out test' however they are blaming this on contamination. Link to comment Share on other sites More sharing options...
Mr Punter Posted October 10, 2023 Share Posted October 10, 2023 Once you have felt and batten the roof should be fairly watertight. You may get the odd drip through a nail hole or leak through a tricky detail. More so if it is very windy or extended rain. What make was the membrane? Link to comment Share on other sites More sharing options...
Jimbo63464 Posted October 10, 2023 Author Share Posted October 10, 2023 Proctor Roofshield. This was more than the odd drip. This was coming through every nail hole and running down the rafters and saturating the ceilings below. The back of the house which is West facing and gets the brunt of our weather didn't leak. The front which is East facing is where it leaked but as it was different rolls so this is why we believe it could be a faulty batch but obviously they are denning that and blaming "contamination" Not really sure what they are suggesting this could be and I will seek clarification tomorrow but very much feels like a large company trying to cover up a faulty product. Spoke to building control today regarding it who are also not interested and said it is an issue for me to take up with the manufacturer. They are obviously not worried about the thousands of other customers using the same product which clearly doesn't perform as it should. Link to comment Share on other sites More sharing options...
Mr Punter Posted October 10, 2023 Share Posted October 10, 2023 You are probably the best judge of whether the stuff is up to spec. It does not sound like it to me. What does you roofer think? You will rarely get a manufacturer or contractor admit to faulty materials or workmanship. They will always try to blame you / others. From a legal standpoint your claim would be against whoever you bought from, but the manufacturer may choose to step up and get it sorted so they don't lose face. Good luck! Link to comment Share on other sites More sharing options...
Jimbo63464 Posted October 11, 2023 Author Share Posted October 11, 2023 For anyone that's interested I thought I would provide an update. I have spoken to several roofing companies today who have all been saying similar things. Apparently this product was brilliant for 30 years but seriously gone downhill in the last 18 months / 2 years since the company was bought out. Some local roofers had issues with it leaking and the manufacturer was not interested in the slightest. Many of them have moved away from the product and are using alternatives now. Apparently the term and conditions also changed at the same time. Once it was considered a waterproof layer now they use phrases such as ". The roofing underlay should therefore be considered water-resistant and not waterproof" Link to comment Share on other sites More sharing options...
Mike Posted October 11, 2023 Share Posted October 11, 2023 (edited) 39 minutes ago, Jimbo63464 said: Apparently the term and conditions also changed at the same time. Proctor Roofshield has a BBA Certificate and is advertised as such. That stands independently from any terms & conditions. The certificate states that the fabric meets BS EN 13859-1 : 2014 Class W1 (a 200mm static water column) - which is the top rating (Class W2 being somewhat less good). But that is a test of the fabric, not the nail holes, which you note are the points of leakage - so presumably the fabric itself is performing OK? If you really think not and the company aren't adequately cooperating, then I guess your options include getting a sample independently tested and/or or seeking advice from Trading Standards. Edited October 11, 2023 by Mike Link to comment Share on other sites More sharing options...
MJNewton Posted October 13, 2023 Share Posted October 13, 2023 (edited) On 10/10/2023 at 19:29, Jimbo63464 said: This was coming through every nail hole and running down the rafters and saturating the ceilings below. You've mentioned nail holes a couple of times yet all the discussion seems to be about the membrane material. If the water is coming in through the nail holes, and only the nail holes, then what does the material have to do with it? A hole is a hole and of course is never going to be waterproof. The mitigation for this is, and always has been, ensuring the membrane is drooped between rafters (keeps any water that finds its way through away from the rafters and nail holes) and of course having a layer of tiles on top (which practically keeps all the water away in the first place). Edited October 13, 2023 by MJNewton 1 Link to comment Share on other sites More sharing options...
osprey Posted October 20, 2023 Share Posted October 20, 2023 On 09/10/2023 at 20:13, Jimbo63464 said: We are currently in the process of having our roof replaced. We have used what we thought was a premium breathable felt with clay Broseley tiles. The roofers have stripped off the roof at the front and back and re-felted the front with suitable Batton spacing ready for the tiles. As far as we are concerned once the roof had the new felt and battons we (roofer and I) thought that the house was sufficiently water tight as a temporary measure while the dormas were completed at the back of the house. With some heavy rain the felt is leaking like a sieve. It is as if it is coming through every nail hole and running down the rafters to the wall plate onto the ceilings below. The manufacturer has come out and their guys who came out admitted that they have had some issues with the product. They then have spent over 2 weeks testing the felt they took from our roof but have now come back and said they don't expect it to be waterproof and it is only a secondary water proof layer. This seems like BS to me. Anyone else had any issues or advice they can offer?? Please! Interesting. I have just had EXACTLY the same problem. The membrane? Roofshield. 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted October 20, 2023 Share Posted October 20, 2023 On 13/10/2023 at 10:20, MJNewton said: . The mitigation for this is, and always has been, ensuring the membrane is drooped between rafters The only place we've had issues is where I got that wrong. - Link to comment Share on other sites More sharing options...
WhiteBoyRick Posted February 16 Share Posted February 16 This might be of some interest! https://roofingtoday.co.uk/don-low-investigates-pivotal-factor-behind-industry-wide-roofing-membrane-leaks/ 2 Link to comment Share on other sites More sharing options...
makie Posted February 18 Share Posted February 18 On 16/02/2024 at 22:26, WhiteBoyRick said: This might be of some interest! https://roofingtoday.co.uk/don-low-investigates-pivotal-factor-behind-industry-wide-roofing-membrane-leaks/ Yeah that's a lot of BS, we've had the same issues in Scotland with that felt. On slated roofs we don't have battens and it's still an issue. Just a cop out from them making a shitty product. 2 Link to comment Share on other sites More sharing options...
csi Posted August 30 Share Posted August 30 Hi I seem to have a similar problem with this product what was the outcome. Did it leak after you put the tiles on ? Link to comment Share on other sites More sharing options...
Dave Jones Posted August 30 Share Posted August 30 Cant see how the roofer could be to blame really, if they have nailed battens to the trusses then they have done the correct thing surely ? We used the bog standard tyvec that the merchants stock and it was bone dry, used 2 full boxes of paslode nails on it as rosemarys need 100mm battens.. Link to comment Share on other sites More sharing options...
scottishjohn Posted August 31 Share Posted August 31 how long has it been exposed to sunlight --anything over a few months and the UV strts to break it down Link to comment Share on other sites More sharing options...
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