jamieled Posted September 21, 2019 Share Posted September 21, 2019 I've used tyvek housewrap on my frame. The joiner reckons it's usual to use something different on the roof. I'd tend to agree but only as I haven't seen any frames near us using the same stuff on the roofs and the walls. Should I be using something different on the roof, and if so what are the main differences between main house membrane and roofing membrane? Link to comment Share on other sites More sharing options...
LA3222 Posted September 21, 2019 Share Posted September 21, 2019 Yeah @jamieled, it should be tenting/non tenting type I believe. It is dependent upon if you have a cold or warm roof setup. There will be loads of info on this in the roofing section. Link to comment Share on other sites More sharing options...
Thedreamer Posted September 21, 2019 Share Posted September 21, 2019 @jamieled we used roof shield. There a video in the link below that shows how it works. https://www.proctorgroup.com/products/roofshield From my understanding with a lot of roofing membranes the problem is when they get fitted in frosty conditions. Link to comment Share on other sites More sharing options...
Cpd Posted September 21, 2019 Share Posted September 21, 2019 11 minutes ago, Thedreamer said: From my understanding with a lot of roofing membranes the problem is when they get fitted in frosty conditions. This is very true and I used roofsheild and then it got wet and froze, completely destroyed the waterproof quality’s of the product....... Link to comment Share on other sites More sharing options...
Ed Davies Posted September 21, 2019 Share Posted September 21, 2019 I have a similar question to @jamieled: I've used TF200 on my walls (and around my window reveals). It's stood up nicely to long exposure, about 18 months for the oldest bits. Ideally, I'd like to use it to replace the failed stuff on my that failed when it got wet and froze. I can't see the point of a membrane which can't stand freezing when it's wet - the most likely conditions for a roof failure which results in water getting on to the membrane are freezing conditions resulting in ice damming or other such problems. Apart from anything else, TF200 is shiny which will improve the insulation qualities of the roof a bit. But TF200 isn't certified for roofs. Any idea why? Link to comment Share on other sites More sharing options...
Thedreamer Posted September 21, 2019 Share Posted September 21, 2019 With the roof membrane is not when it's being fitted that when it gets wet and then freezes it causes a problem? Link to comment Share on other sites More sharing options...
Cpd Posted September 21, 2019 Share Posted September 21, 2019 Yes that’s correct but what would happen If you had a leak and water was tracking down the membrane and then froze, unbeknown to you, then after it thaws that section of membrane would not be waterproof and would then let water in next time it rained. It’s a bloody nuisance as I got caught out twice by freezing water ruining my membrane on the roof. 1 Link to comment Share on other sites More sharing options...
MikeSharp01 Posted September 21, 2019 Share Posted September 21, 2019 Hmmm .. is there not a membrane that can cope with being wet & then frozen without loss of waterproofing? I must admit I had not come across this issue before so good to learn about it so I can avoid it. Link to comment Share on other sites More sharing options...
Cpd Posted September 21, 2019 Share Posted September 21, 2019 I think @Crofter may have used a good one, or @Russell griffiths has done the research if I remember correctly Link to comment Share on other sites More sharing options...
ProDave Posted September 21, 2019 Share Posted September 21, 2019 I used Protekt VP400 plus on my roof, recommended by the builder as it would stand up to prolonged exposure before the roof got tiled. 1 Link to comment Share on other sites More sharing options...
jamieled Posted September 21, 2019 Author Share Posted September 21, 2019 Ta to all who replied. A trip to the builders merchants on Monday is in order. Link to comment Share on other sites More sharing options...
Russell griffiths Posted September 21, 2019 Share Posted September 21, 2019 26 minutes ago, jamieled said: Ta to all who replied. A trip to the builders merchants on Monday is in order. This will be a waste of time as the staff in most bm won’t know a good product if it hit them around the face. 1 Link to comment Share on other sites More sharing options...
Russell griffiths Posted September 21, 2019 Share Posted September 21, 2019 I phoned SIGA and they sent a rep to my site, he was in a van filled with more fancy stuff than you could shake a stick at. He was very happy to demonstrate the sticking abilities of his tapes by applying them to our esp blocks and challenging me to pull them off. Not cheap, but do you want cheap, I would rather spend my money on good base materials than a wall hung toilet. My roof membrane has just cost me a little over £1500 plus vat, plus £120 in tape to seal the laps. I hope it was money well spent. 1 Link to comment Share on other sites More sharing options...
Patrick Posted September 21, 2019 Share Posted September 21, 2019 9 minutes ago, Russell griffiths said: Not cheap, but do you want cheap, I would rather spend my money on good base materials than a wall hung toilet. Give over. We all know you gonna have excellent base materials AND a wall hung toilet ? To topic: SIGA=Worldclass materials Link to comment Share on other sites More sharing options...
dpmiller Posted September 21, 2019 Share Posted September 21, 2019 2 minutes ago, Patrick said: Give over. We all know you gonna have excellent base materials AND a wall hung toilet ? To topic: SIGA=Worldclass materials Good to know. we're using some! Link to comment Share on other sites More sharing options...
jamieled Posted September 22, 2019 Author Share Posted September 22, 2019 @Russell griffiths how big is your roof?! We're probably not aiming for the world class end of the market, just functional will do. Link to comment Share on other sites More sharing options...
Russell griffiths Posted September 22, 2019 Share Posted September 22, 2019 1 hour ago, jamieled said: @Russell griffiths how big is your roof?! We're probably not aiming for the world class end of the market, just functional will do. 355m Link to comment Share on other sites More sharing options...
MikeSharp01 Posted September 22, 2019 Share Posted September 22, 2019 12 hours ago, Russell griffiths said: My roof membrane Which did you choose and is it wet / freeze proof? Link to comment Share on other sites More sharing options...
Russell griffiths Posted September 22, 2019 Share Posted September 22, 2019 15 minutes ago, MikeSharp01 said: Which did you choose and is it wet / freeze proof? Mine is slightly different as we have a raised seam metal roof, so very different to your normal under tile type membrane. Link to comment Share on other sites More sharing options...
jamieled Posted September 22, 2019 Author Share Posted September 22, 2019 2 hours ago, Russell griffiths said: 355m Sigh of relief from me as our roof is around half of that so my original cost estimate is ok. Cheers! Link to comment Share on other sites More sharing options...
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