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Underground copper is much thicker than standard copper pipe though.

I once removed a gas pipe that passed through a damp brick wall unsleaved. When it was removed it was like a teabag so your post I'm afraid is garbage.

Before burying a copper gas pipe in concrete my first choice would be a roll of factory sheathed copper, second would be pipe wrapped in denso tape. Wrapped in yellow gas tape? :shock: :?

Room will be a tv/xbox room for the kids, in the future when they've outgrown it then it will become a spare bedroom so no real increase in load. The only reason I didn't just extend the ring was the fact I had to put cables behind the insulation. Was just unsure on the regs & if LABC may...

A bit more digging 433.1 looks like 20A it is then.

Any issues with this? Having done a quick google have read some say minimum MCB size for sockets on a radial should be 20A (some disagree). This is for a garage conversion into a kids play room. Total circuit is 22M of 2.5 T&E. Two sockets will be in an external wall and cables will run...

Alright Chris, how's it going? :lol:

Last time I helped a neighbor out (5 min job). I never asked for any payment. They stuck an envelope through my door with £50 in it that night. Thank fook I don't have neighbors like the OP :lol:

Don't give your vouchers to the missus :shock: . Save them up to buy o-rings when the pile of ****e is ****ing water out of every connection in the boiler (usually around 9-10 months after it's installed :wink: )

I was thinking flow turbine on the Logic, but then remembered they are the daddy of all boilers and never have any faults on them :D :D :D

It's a heated space above and the external wall is already looking like 70mm kingspan (89mm posts) then 40mm kingspan k18 or a multi layer foil with battens. Either way this brings finished wall surface almost to the window opening so not keen on adding any extra there either.

Looking for the best performance for minimum thickness. I'm looking to convert my garage into a habitable space. The floor in the garage is 85mm lower than in the house. Really struggling to find a solution that will avoid having to dig up the floor. Target u value for building regs is...

35mm box. Picture is deceiving.

They most certainly are. Once the sheet of plasterboard is back on there is a partition going up along the line of the steel beam so they will be less than 150 from the ceiling and corner of the room.

Is this ok to avoid having to derate the cables?