I’ve got less than 200mm cover albeit close to the house. I would be concerned by a concrete mixer, cars exert relatively low ground pressure, and that is distributed significantly even 200mm depth. Also more confident about PVC pipe which will flex, than a rigid pipe.
Just show that on a drawing. I don’t know any specific requirements, maybe they vary between each LA. As long as they are not blocking any access or parking provisions, double they are interested in what they look like considering they keep giving us more of them.
No personal experience of them but found their website https://hbdsystems.co.uk/hyline-sliding-doors/
Would be surprised if they manufacture themselves, maybe rebranding something from Eastern Europe?
Doesn’t look right to me, I would expect to see at least 1m above the gutter level.
This is what AI says https://share.google/aimode/7iJ9jUTYOfNaOr9Mf
so, no it isn’t correct. Should have a HETAS installers certificate.
Doesn’t matter where you buy them from, more important is who fits them. It’s just a case of trawling the net to find the best price, delivered, which maybe a significant factor where you are! Might be worth ringing your builder merchants as well as their best prices won’t be on the web.
I think it’s a bit more predictable than gambling. TOU tariffs are based around market prices which are linked to supply and demand. We know there will be oversupply on windy nights and sunny days and, more predictably, large steam turbines which have to keep spinning all night.
In theory there was no need so I wasn’t going to put any heat emitters in the bedrooms but decided to err on the side of caution and had (not oversized) radiators installed. Wet towel rails in bathrooms as well. Partly it was to satisfy the installer’s MCS calculators, partly to avoid domestic complaints! Glad I did because we do feel the need during cold snaps.