Search found 17 matches

by Smallholder
Sun May 28, 2023 2:16 pm
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

Re: What are the bureaucratic restrictions for PV on a flat roof?

I guess this is a situation that's very dependent on other factors. Will this be a DIY installation, resulting no MCS certificate and lack of export payments? If not, could the additional summer generation result in sufficient credit balance to make up for the winter shortfall? It might be quite ea...
by Smallholder
Sun May 28, 2023 1:16 pm
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

Re: What are the bureaucratic restrictions for PV on a flat roof?

I know you have 20 panels in that plan, but I wonder if it's worth crunching the numbers to see how many panels could be fitted in a back to back east-west configuration on the top roof section. That way you could eliminate the gap needed to prevent self-shading, still maintain a pitch sufficient f...
by Smallholder
Sun May 28, 2023 10:13 am
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

Re: What are the bureaucratic restrictions for PV on a flat roof?

I wonder how the roof lanterns affect the current height of the roof. Would the limit be 200mm from the main roof structure, or 200mm above the highest point, aka the top of the lanterns? That could make a big difference. That's a valid point! My guess it that it would be the existing surface. So f...
by Smallholder
Sun May 28, 2023 10:11 am
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

Re: What are the bureaucratic restrictions for PV on a flat roof?

Hi, as a placeholder till people who know come along, the general advice for roof edges was 200-300mm. This avoids wind lift on the sides, and rain run off passing over the gutter at the bottom. For the top it's also to stop the higher (raised due to the mounting) PV panels actually be higher than ...
by Smallholder
Sun May 28, 2023 10:01 am
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

Re: What are the bureaucratic restrictions for PV on a flat roof?

I'm trying to get a new PV system installed, on a flat roof. I'm about to apply for planning permission, but can't find any solid info online about restrictions in terms of how far from the edge the panels must be. I assume this is a building regs thing rather than planning permission, but I'll nee...
by Smallholder
Sun May 28, 2023 9:57 am
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

Re: What are the bureaucratic restrictions for PV on a flat roof?

Bingo! it was Mr Pablo's pictures, certain there was another near then. https://camelot-forum.co.uk/phpBB3/viewtopic.php?f=5&t=1451&p=20058#p20058 Beautiful, I love this! Thanks for finding it. My roof layout is quite a bit different, so I am looking at a layout something like this: https:/...
by Smallholder
Sun May 28, 2023 9:45 am
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

Re: What are the bureaucratic restrictions for PV on a flat roof?

I'll admit I didn't do PP for my garage array, taking the route of don't tell, don't make problems. Could you take an alternative approach and potentially re-roof the garage with a pitched roof, then put solar panels on top? It could liberate some useful storage space underneath. That's not a bad s...
by Smallholder
Fri May 26, 2023 6:06 pm
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

Re: What are the bureaucratic restrictions for PV on a flat roof?

Hi, as a placeholder till people who know come along, the general advice for roof edges was 200-300mm. This avoids wind lift on the sides, and rain run off passing over the gutter at the bottom. For the top it's also to stop the higher (raised due to the mounting) PV panels actually be higher than ...
by Smallholder
Fri May 26, 2023 6:02 pm
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

Re: What are the bureaucratic restrictions for PV on a flat roof?

Mr Gus wrote: Fri May 26, 2023 5:02 pm There was recently a thread on the same matter, in that instance a shared run of garage roofing I think, have a dig around, (it had pictures also)
Thanks, I've had a bit of a dig around, but can't find anything. I'll search again tonight.
by Smallholder
Fri May 26, 2023 4:36 pm
Forum: Photovoltaic
Topic: What are the bureaucratic restrictions for PV on a flat roof?
Replies: 23
Views: 3904

What are the bureaucratic restrictions for PV on a flat roof?

I'm trying to get a new PV system installed, on a flat roof. I'm about to apply for planning permission, but can't find any solid info online about restrictions in terms of how far from the edge the panels must be. I assume this is a building regs thing rather than planning permission, but I'll need...