Oz07

Does it take you a long time to draw off hot at basins then?

Ah I understand i had manifold in last place worked well. If your cylinder is in airing cupboard and you have a separate utility/ plant room i suppose you'd have hot manifold in ac and cold in utility/plant?

What does that mean put in layman's terms

If you have manifold close to hot water tank then presumably could use big pipe to manifold?

Was that a typo in your original thread about australia? All their loos seem to be connected on a flexible with a tap on the wall. Must be some kind of reg over there? Here a lot of our toilets are plumbed in with fixed pipes. Even my old concealed loo was done with fixed pipework IIRC. Is there a reason they have to be on a flexi? Presume its too hard to change now.

I think OP said he was restricted to 350mm total due to foundation. My point is by the time you spend upwards of 2k on 25mm pir, 25mm battens and lose 50mm of internal space it doesn't seem economical

I'm with you I've never used pir in cavities either. I've done traditional with dot and dab and got great air test score. Parge coat prior and linked to airtight membrane on ceiling. I don't see how the pir helps you with this?

I think they're always a bit undersized. They're always designed to be filled or skimmed so suppose it makes sense to be smaller rather than bigger.

Is the blockwork already built up on the rake? If not you can nail it beforehand. Otherwise tosh one through top and bottom, not ideal. I've never really thought about nail position just do what looks right. A nail wants to be 2/3 into the back 1/3 into the front usually so just work on that principle. Obviously you dont want it near the thin cut edge it won't be doing anything. You want quite a lot of meat.

3 nails id have thought. It’s not something I ever give a lot of thought to just stop nailing when it looks right. The one next to wall just nail thru back of hip or valley into jack.

AI even coming for the blue collar jobs now

As @saveasteading id just give it time

I never had this problem after 5 years. Even more annoying for you if you're softening the water prior. What is likely cause? Suppose you could swap the manifold after 10 years and consider it a consumable.

And ask for the whole garage

Why are they trying to reinvent the wheel. Cement mixer and barrow is fine. Can't see anyone using it for a form pour