J1mbo Posted February 14, 2022 Share Posted February 14, 2022 Any thoughts about in-roof panels? IMO the end result looks much better and I am aware that most systems will produce slightly less output. OTOH there is presumably much less stress on the roof. Link to comment Share on other sites More sharing options...
JohnMo Posted February 14, 2022 Share Posted February 14, 2022 New build the only way to go, you don't have to pay for the slates underneath. 1 Link to comment Share on other sites More sharing options...
J1mbo Posted February 14, 2022 Author Share Posted February 14, 2022 Sorry this is for retrofit. 1970s house with a standard trussed roof. Link to comment Share on other sites More sharing options...
nod Posted February 14, 2022 Share Posted February 14, 2022 While I hate the look of solar panels Especially on slate In roof at least saves you some slates or tiles Link to comment Share on other sites More sharing options...
Nickfromwales Posted February 14, 2022 Share Posted February 14, 2022 2 hours ago, J1mbo said: Sorry this is for retrofit. 1970s house with a standard trussed roof. Unless you have flat concrete tiles or slates you’re stuck with on roof anyways. If you have either then you may want to make the installation look ‘tres bien’ by integrating in roof, but you’ll then have the cost of the roofer doing all the cuts plus the iffy job of getting the flashing to adhere to the weathered tiles / slates. Cost effective route is to go on roof, just don’t forget the edge protectors to stop birds nesting under them. Link to comment Share on other sites More sharing options...
Dave Jones Posted February 15, 2022 Share Posted February 15, 2022 inroof does future proof any future roof issues as well. Personally would not use the cheap adhesive flashing and use lead instead. Link to comment Share on other sites More sharing options...
J1mbo Posted February 15, 2022 Author Share Posted February 15, 2022 9 hours ago, Nickfromwales said: Unless you have flat concrete tiles or slates you’re stuck with on roof anyways. If you have either then you may want to make the installation look ‘tres bien’ by integrating in roof, but you’ll then have the cost of the roofer doing all the cuts plus the iffy job of getting the flashing to adhere to the weathered tiles / slates. Cost effective route is to go on roof, just don’t forget the edge protectors to stop birds nesting under them. Thanks, yes they are flat concrete tiles. There will be so few left, they could easily be laid new and certainly around the flashing areas. Re edge protectors. I've seen these on several installations recently. They look to be solid so would eliminate the underside cooling and hence reduce output? Although they do improve the look of the installation somewhat. Link to comment Share on other sites More sharing options...
Wil Posted February 15, 2022 Share Posted February 15, 2022 Interesting. I'm considering more solar on our roof with marley ridged concrete tiles. The bituminous felt underneath is a bit knackered where it meets the chimneys, so was gearing up for a full roof off and re-felt job with in-roof panels. ? Hopefully make it a warm roof at the same time... Link to comment Share on other sites More sharing options...
Pocster Posted February 15, 2022 Share Posted February 15, 2022 I looked into this. I went for standard roof mounted PV because it was cheaper, more efficient , also if a panel does fail it doesn't affect the roof. But agree in-roof looks nicer. Link to comment Share on other sites More sharing options...
Bitpipe Posted February 15, 2022 Share Posted February 15, 2022 27 minutes ago, pocster said: also if a panel does fail it doesn't affect the roof. You mean physically fail as opposed to electrically? Link to comment Share on other sites More sharing options...
Pocster Posted February 15, 2022 Share Posted February 15, 2022 7 minutes ago, Bitpipe said: You mean physically fail as opposed to electrically? Yes I.e if it’s removed you are still water tight Link to comment Share on other sites More sharing options...
SteamyTea Posted February 15, 2022 Share Posted February 15, 2022 1 minute ago, pocster said: Yes I.e if it’s removed you are still water tight Why would it be removed and not replaced? £10 Sheet of polycarbonate would sort the problem if waiting for a replacement after a completely devastating failure though they tend to stay intact after shattering) Link to comment Share on other sites More sharing options...
Pocster Posted February 15, 2022 Share Posted February 15, 2022 6 minutes ago, SteamyTea said: Why would it be removed and not replaced? £10 Sheet of polycarbonate would sort the problem if waiting for a replacement after a completely devastating failure though they tend to stay intact after shattering) No idea - but it’s a possibility ! Link to comment Share on other sites More sharing options...
puntloos Posted February 15, 2022 Share Posted February 15, 2022 Was wondering about this. With in-roof, I would imagine you effectively have "trays" for standard panels, no? Or is it a totally different system? My sun-facing roof section has windows in it, I somewhat worry that trying to fit panels on it would leave lots of spaces, but I imagine in-roof would, if anything, be worse? Link to comment Share on other sites More sharing options...
SteamyTea Posted February 15, 2022 Share Posted February 15, 2022 (edited) 15 minutes ago, puntloos said: Was wondering about this If it is not built yet, get rid of the hips, get more on then. But basically yes, standard trays around the windows. I think Velux actually do a PV system. Edited February 15, 2022 by SteamyTea Link to comment Share on other sites More sharing options...
Bitpipe Posted February 15, 2022 Share Posted February 15, 2022 The trays are the same size as the panels so will follow however you propose to lay them out. You'd have the same constraint whether using on roof or in roof. Mine look like this.... bit blurry. Link to comment Share on other sites More sharing options...
Nickfromwales Posted February 15, 2022 Share Posted February 15, 2022 (edited) 2 hours ago, puntloos said: Was wondering about this. With in-roof, I would imagine you effectively have "trays" for standard panels, no? Or is it a totally different system? My sun-facing roof section has windows in it, I somewhat worry that trying to fit panels on it would leave lots of spaces, but I imagine in-roof would, if anything, be worse? Edited February 15, 2022 by Nickfromwales 1 1 Link to comment Share on other sites More sharing options...
Thorfun Posted February 15, 2022 Share Posted February 15, 2022 here's my install. so much nicer than on-roof! 6 Link to comment Share on other sites More sharing options...
J1mbo Posted February 15, 2022 Author Share Posted February 15, 2022 Yes that’s definitely the way to go. As it’s over the battens it doesn’t seem like such a big deal to me. Though I might need to re-felt which will make it a bigger job obviously. Link to comment Share on other sites More sharing options...
Thorfun Posted February 16, 2022 Share Posted February 16, 2022 17 hours ago, J1mbo said: Yes that’s definitely the way to go. As it’s over the battens it doesn’t seem like such a big deal to me. Though I might need to re-felt which will make it a bigger job obviously. yeah. definitely easier on a new build rather than renovation. but if you're having the roof re-tiled then it makes it easier (and potentially cheaper on not having to use tiles under the panels). Link to comment Share on other sites More sharing options...
DragsterDriver Posted February 27, 2022 Share Posted February 27, 2022 On 15/02/2022 at 16:44, Thorfun said: here's my install. so much nicer than on-roof! Very nice! Which brand/supplier? Link to comment Share on other sites More sharing options...
Thorfun Posted February 27, 2022 Share Posted February 27, 2022 3 minutes ago, DragsterDriver said: Very nice! Which brand/supplier? GSE trays and the panels are LG 375W Mono NeonH Black E6. the supplier is a little bit of a sore point as we used Enhabit for our M&E design and they supplied the components for our Solar PV, MVHR and ASHP/DHW. But they have recently been bought out by/merged with Green Building Store and no longer offer ASHP or Solar PV so I have been left with incomplete installations. But that's life I guess and I can find someone else to finish the job. 1 Link to comment Share on other sites More sharing options...
DragsterDriver Posted February 27, 2022 Share Posted February 27, 2022 12 minutes ago, Thorfun said: GSE trays and the panels are LG 375W Mono NeonH Black E6. the supplier is a little bit of a sore point as we used Enhabit for our M&E design and they supplied the components for our Solar PV, MVHR and ASHP/DHW. But they have recently been bought out by/merged with Green Building Store and no longer offer ASHP or Solar PV so I have been left with incomplete installations. But that's life I guess and I can find someone else to finish the job. Bugger! I’ve looked at plug in solar etc but I genuinely have nO idea which brands are good etc. @Nickfromwales do you have any recommendations? Link to comment Share on other sites More sharing options...
Thorfun Posted February 27, 2022 Share Posted February 27, 2022 23 minutes ago, DragsterDriver said: Bugger! I’ve looked at plug in solar etc but I genuinely have nO idea which brands are good etc. @Nickfromwales do you have any recommendations? LG are at the top end of panels so they weren't cheap but they degrade slower than something like the JA Solar panels and have guaranteed performance after a certain number of years. (sorry I forget the actual figures!) 1 Link to comment Share on other sites More sharing options...
PeterW Posted February 27, 2022 Share Posted February 27, 2022 JA have guarantees on their output too. @DragsterDriver give Wagner Renewables a call as they can do all the bits for you inc GSE and panels etc https://www.wagner-renewables.com 1 Link to comment Share on other sites More sharing options...
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