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Function certainly beats form here. I’d have to be painting that if it was stuck in the middle of my roof. Won’t leak though!

Clear the grout / adhesive away from each outlet and get a decent sized bar as I suggested. 100mm is a stub, which will give you near zero effective leverage. You need 1mm of movement on each one to get you to 150mm centres, is that correct?

There’s loads available

🤣🤣🤣 Oh yes, I’d forgotten about that.

Good thought, but I think it's all pretty solid. I tried some 25mm Amazon decorative covers/Escutcheon with the 46mm cranked connectors that I have and they were cheap rubbish so didn't run true and were just to short as well. I've ordered yet another set of covers/cranked connectors: Grohe 12984045 dimensions which I hope are the same as these ones on Amazon https://www.amazon.co.uk/GROHE-12662000-Grohe-12662000-S-Connector/dp/B003NA5M1Q I wish I could find these 35mm cranked connectors in stainless or Chrome: https://www.amazon.co.uk/HavenlyCove-S-Connector-Adjustable-140-160mm-Fitting/dp/B0H1BHB9TP

Oh I don't think they'd be pleased to hear from me again..! 😄

I get that, but what's your alternative? It's difficult to see how much leeway you may have and how embedded the fitting is, because the focus is on the rule rather than the fitting. What's going over the top to conceal it? Does that give you enough coverage to enlarge the hole slightly? Could you get a diamond holesaw over the top of the existing fitting to clear a little tile and adhesive/grout? You'd possibly need a template/guide to keep it from moving around, but it might be the best option to give you some play if it really is solid. Cut a hole in a spare tile. Stick that to the wall with something temporary (silicone?) to give you a guide?

2 different scenarios. The structural integrity won't be life threatening in small domestic circumstances but could in large buildings. The smoke is a threat in any size but obv only with combustible materials. In the test, the smoke filled a large sports hall sized shed in, from memory, 30 seconds following the flash-over. Flame climbed up the wall, about 7m, at about half m/s until it hit a critical stage and flashed up and across the 20m ceiling in seconds. That would be deadly. I don't think that test had any fireproofing, just ply or osb, but the principle applies. I once bought about 10 tins of intumescent paint and the merchant gave me a fancy certificate which basically said I had bought ten tins, plus lots of words. Nobody checked it was properly or fully applied. Another time, I instructed painters who claimed to understand the subject,to apply each tin over x metres of wall, thinking that made it easy for them. They proudly told me it had gone much further and I'd lots of spare tins to take back for rebate. From peering at exposed steel i have seen that the top seal coat often isn't applied I'm confident it will be in grand projects, but not on smaller private ones. For those who haven't used or seen the stuff, it usually requires multiple coats and is noticeably thick. It's expensive hence plasterboard is popular. Without a seal coat it can absorb moisture and scuffs easily. When heated it expands as char which protects the substrate. After a fire it rubs off like cigarette ash.

Hi stakes stuff, I'm a bit chicken on this since if something breaks I'm in a world of pain

The question needs to be how long it takes until smoke becomes a problem and how long until structural integrity fails. I suspect that most consumer products would fail a similar test. The Grenville Tower Enquiry Report has just been sent to the Crown Prosecution Service, with both company and individuals named. Be interesting to see how fast the CPS act. Took the 18 months to prosecute me over some so minor that I was not even fined.

Reverse a clamp head and use it as a spreader between the two? Couple of pieces of softwood against the threads to protect them? You may need to pick away at any visible adhesive and/or grout if they are really bedded in, but strange if they are.

I may watch that. My experience of wood wall lining is that it needs a LOT of intumescent varnish then a sealing coat. Very expensive and rather ugly. But that most people don't put nearly enough on (cost and ignorance) and the bco usually just wants a spec and certificate. I've never known one check the thickness. I've seen a film of a fire test on a timber wall. As fire heat rises up the wall from the source, it preheats it then there is a flash of flame and smoke. Scary.

They do in Scotland. I would have thought they did elsewhere?

I tried it will a 100mm long version (no screw driver) and applied quite a lot of force and there was zero movement unfortunately

I vaguely remember that Building regs do not specify minimum stair widths.

I think that's right, they are at a slight angle to each other. They're obviously tiled in and there is tile adhesive around them which makes me a bit nervous of strong arming them

Ok. So is this just because these are not parallel and are not pointing ‘straight out’? If so, you can buy a piece of metal bar with a 1/2” BSP thread, and screw that into the brass fitting. Something like THIS with a large screwdriver poked into it for some more leverage if necessary. Then use that to strong-arm the fittings into compliance. Tweak a bit of one, then a bit of the other, and you’ll get it to work.

If the glue down is fitted correctly it will be fine

I measure 148mm at the threads in the wall and then 147mm when I add the nipple&adapter:

Hadn’t thought about that - good point.

I wondered if that’s why the top room was presented as an office - because surely you’d need a fire door otherwise. I liked the cladding design, thought the overhang was clever. Loved that his grandparents got to see it built - no sad GD bits and little jeopardy, made a nice change!

It looked to me like they were running electrics under the false floor. Or maybe just put sockets on the internal walls?

What are the pipe centres that you have? 150mm is the target, so how far out are you?

I will forgive you, may just take some time.

The manufacturers of one system I saw pre-drilled service holes vertically, every 300mm iirc, and you ran cables in those. Personally, I could think of no worse a home to have spent my money on. Not watched it, as GD gets right up my nose tbh.