Fairy Posted December 9 Share Posted December 9 (edited) Hi all, ive moved into a new house and found the garage roof is leaking, so i've got quotes to get this repaired, turns out the previous owner has been doing patch up jobs for a long time AND its an asbestos roof so need to replace the whole thing. I want to later on down the line convert the garage into a usable room one day. So want to do this correctly. I'm wondering if anybody can recommend which would be the best option for the new roof, while still being cost savvy of course, as each builder is of course saying the one they want to install is better than the other options lol The options are: traditional 3 layer felt roof epdm rubber fibre cement slate tiles profile 6 fibre sheets It's a slightly slanted roof if that helps. Edited December 9 by Fairy Link to comment Share on other sites More sharing options...
Iceverge Posted December 9 Share Posted December 9 Any pictures? Inside and outside please. If you plan to use it as a habitable space later I would be tempted to put some insulation in there at the same time. Depending on the quality of the rest of the structure then it might be cheaper to rebuild the whole thing if you want it habitable. Link to comment Share on other sites More sharing options...
Fairy Posted December 9 Author Share Posted December 9 this is the garage Link to comment Share on other sites More sharing options...
Fairy Posted December 9 Author Share Posted December 9 it's not letting me upload the video i took internally so heres a screenshot of part of it internally Link to comment Share on other sites More sharing options...
Iceverge Posted December 9 Share Posted December 9 (edited) Insulated metal sheeting is by far the simplest and cheapest solution for a small span like that. I would raise the pitch to at least 4deg (about 1:14) by raising the rear wall plate or taking a row of bricks off the front wall. Could completely dispense with all the internal timbers then too as the span looks like it's only about 2.5m. Edited December 9 by Iceverge 1 Link to comment Share on other sites More sharing options...
joe90 Posted December 9 Share Posted December 9 Wot @Iceverge says above 👍. Link to comment Share on other sites More sharing options...
G and J Posted December 9 Share Posted December 9 My man cave will be a similar area to the OP’s garage, and I initially planned to use the insulated metal sheeting as the roof. When I priced up doing a slightly better insulated EPDM roof it worked out a fair bit cheaper, rather less than half the price of Kingspan. The difference may be installation costs as I’ll be doing it all myself, once funds allow. Have I missed something? Link to comment Share on other sites More sharing options...
Fairy Posted December 9 Author Share Posted December 9 (edited) thanks @iceverge how long would insulated metal sheeting last and is that any of the options i listed above or something totally different? and it's suitable to then have a room built in there then with metal sheets? Edited December 9 by Fairy letter missing from name Link to comment Share on other sites More sharing options...
Iceverge Posted Tuesday at 09:28 Share Posted Tuesday at 09:28 20 hours ago, G and J said: When I priced up doing a slightly better insulated EPDM roof it worked out a fair bit cheaper, rather less than half the price of Kingspan. The difference may be installation costs as I’ll be doing it all myself, once funds allow. Have I missed something? Put a value on your time and see where it lands. On the above example, as the span is small no other structural roof work would be needed. No joists, rafters purlins etc 20 hours ago, Fairy said: thanks @iceverge how long would insulated metal sheeting last and is that any of the options i listed above or something totally different? and it's suitable to then have a room built in there then with metal sheets? I've seen metal sheeting in pretty good condition after 60 years and zero treatment had been applied. No problems as a habitable room. It's the same as this from 13:32. 1 Link to comment Share on other sites More sharing options...
Fairy Posted Tuesday at 11:51 Author Share Posted Tuesday at 11:51 thanks @Iceverge i spoke to the builder and he said these sheets cannot be used as my pitch is below 11 and apparent need 17 degree minimum to doa. roof like that - i have no idea what this means, does it make sense to you? if yes what else would you advise please? Link to comment Share on other sites More sharing options...
joe90 Posted Tuesday at 11:53 Share Posted Tuesday at 11:53 1 minute ago, Fairy said: my pitch is below 11 and apparent need 17 degree minimum Just needs more slope to make water run off, easily done with another row of bricks or timber to raise the top,edge, Link to comment Share on other sites More sharing options...
Fairy Posted Tuesday at 12:00 Author Share Posted Tuesday at 12:00 thanks @joe90 is that expensive to do? Link to comment Share on other sites More sharing options...
Fairy Posted Tuesday at 12:01 Author Share Posted Tuesday at 12:01 oh yes he also said it would make it higher than my neighbours garage next to mine so cant do that? Link to comment Share on other sites More sharing options...
joe90 Posted Tuesday at 12:28 Share Posted Tuesday at 12:28 (edited) 28 minutes ago, Fairy said: thanks @joe90 is that expensive to do? Edited Tuesday at 12:29 by joe90 Link to comment Share on other sites More sharing options...
G and J Posted Tuesday at 12:36 Share Posted Tuesday at 12:36 3 hours ago, Iceverge said: Put a value on your time and see where it lands. I’m a wrinkly. Even when I was working I’d always prefer to do stuff myself so I tend to price my time is at zero unless it’s something I don’t fancy doing. Then my hourly rate in frankly extortionate lol The thing that put me off the insulated metal roof sheets was the idea that when raining it would sound like a biscuit tin. Link to comment Share on other sites More sharing options...
G and J Posted Tuesday at 12:37 Share Posted Tuesday at 12:37 45 minutes ago, Fairy said: thanks @Iceverge i spoke to the builder and he said these sheets cannot be used as my pitch is below 11 and apparent need 17 degree minimum to doa. roof like that - i have no idea what this means, does it make sense to you? if yes what else would you advise please? 4degrees after deflection according to the Kingspan data sheet. But if a builder doesn’t want to do something it might be dangerous to insist. 1 Link to comment Share on other sites More sharing options...
joe90 Posted Tuesday at 12:40 Share Posted Tuesday at 12:40 Simply get the builder(s) to quote for it, not a big job but if it ends up a better job overall probably worth doing.(it’s what I would do especially as you want it as a man cave or similar in future 32 minutes ago, Fairy said: oh yes he also said it would make it higher than my neighbours garage next to mine so cant do that? why not? Unless next doors roof runs their water onto your roof (which should never have happened in the first place SIT REP just checked with Cladco (my go to metal roofing supplier) and they confirm 4’ is the minimum slope fir their product https://www.cladco.co.uk/insulated-panels Link to comment Share on other sites More sharing options...
G and J Posted Tuesday at 12:45 Share Posted Tuesday at 12:45 3 minutes ago, joe90 said: Simply get the builder(s) to quote for it, not a big job but if it ends up a better job overall probably worth doing.(it’s what I would do especially as you want it as a man cave or similar in future why not? Unless next doors roof runs their water onto your roof (which should never have happened in the first place SIT REP just checked with Cladco (my go to metal roofing supplier) and they confirm 4’ is the minimum slope fir their product https://www.cladco.co.uk/insulated-panels I’m guessing you’ve done a few then - are they noisy during rain? Would they conduct sound a lot (my man cave might accidentally have a fairly robust sound system, one never knows….) Link to comment Share on other sites More sharing options...
joe90 Posted Tuesday at 12:48 Share Posted Tuesday at 12:48 1 minute ago, G and J said: I’m guessing you’ve done a few then - are they noisy during rain? Would they conduct sound a lot (my man cave might accidentally have a fairly robust sound system, one never knows….) Poly insulation is not as sound absorbing as other types of insulation gut you could always add sound insulation underneath it. Link to comment Share on other sites More sharing options...
G and J Posted Tuesday at 12:52 Share Posted Tuesday at 12:52 1 minute ago, joe90 said: Poly insulation is not as sound absorbing as other types of insulation gut you could always add sound insulation underneath it. I looked into that and realised that maybe I should think about using mineral wool insulation instead, hence me coming round to an EPDM roof. Suffice to say it’s still at the drawing board stage and there’s the small matter of us not having spare cash to build I’d before selling our house so my man cave will be built after the house. Link to comment Share on other sites More sharing options...
Fairy Posted Tuesday at 14:14 Author Share Posted Tuesday at 14:14 thanks @joe90so to confirm there is no issue with raising the pitch higher than the neighbours garage? no comeback etc? Link to comment Share on other sites More sharing options...
Iceverge Posted Tuesday at 14:45 Share Posted Tuesday at 14:45 2 hours ago, Fairy said: oh yes he also said it would make it higher than my neighbours garage next to mine so cant do that? Builders are conservative beasts, understandably so, as big a recall to a job could break them, so they stick with what they know. However this can lead to change paralysis, where they won't every try anything new and will make every excuse under the sun to avoid it. Insulated metal sheeting is technically far simpler to construct than an EDPM roof, and in my opinion far less lightly to go wrong. Get the Kingspan data sheet and give it to your builder and cajole them along the way. They'll probably soften out quickly enough once they think about it. 1 Link to comment Share on other sites More sharing options...
Iceverge Posted Tuesday at 14:52 Share Posted Tuesday at 14:52 1 hour ago, G and J said: I looked into that and realised that maybe I should think about using mineral wool insulation instead, hence me coming round to an EPDM roof. Suffice to say it’s still at the drawing board stage and there’s the small matter of us not having spare cash to build I’d before selling our house so my man cave will be built after the house. Reading the internet people don't seem unduly concerned about metal insulated panels for noise. It's certainly nothing compared to a uninsulated metal roof. You can get mineral wool sandwich panels too. Which should preformed excellently. Link to comment Share on other sites More sharing options...
joe90 Posted Tuesday at 14:58 Share Posted Tuesday at 14:58 42 minutes ago, Fairy said: thanks @joe90so to confirm there is no issue with raising the pitch higher than the neighbours garage? no comeback etc? 2 hours ago, joe90 said: why not? Unless next doors roof runs their water onto your roof (which should never have happened in the first place However after confirming the minimum slope is 4’(for the panels I would use) no need to raise the roof at all. Link to comment Share on other sites More sharing options...
joe90 Posted Tuesday at 14:59 Share Posted Tuesday at 14:59 13 minutes ago, Iceverge said: Insulated metal sheeting is technically far simpler to construct than an EDPM roof, and in my opinion far less lightly to go wrong. I agree and will give a better result all round. Link to comment Share on other sites More sharing options...
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