Mr Punter

It could be better as a ridge beam on a low pitched roof.

The patio is too high. Raising it has made it even worse and he should have known better. The wall looks very damp. Could you form a channel next to the wall around 120mm wide x 150mm deep to act as a French drain?

I like the ball valves with a handle. You may need to adapt to copper first. The old screw down stopcocks can seize and leak. We have about 8 bar pressure at home and have a pressure reducing valve as well.

Glulam will be deeper. Price up in both.

Looks good for haunching up kerbs etc. Tossers.

They look good. I guess that at about £5 each, they won't feature for most plumbers or builders, but may work for high end projects and self build. I think tracpipe gas pipe is a bit like this, but it has a plastic outer sheath.

+1 for a couple of dMEV fans. You could also have humidity trickle vents or through wall vents for fresh air. Get rid of the tumble dryer and use a decent dehumidifier with plumbed in condense. Put a drying rack or rail in the same room / cupboard as the dehumidifier.

Yes. Don't have plasterboard as a strip either side and waistbands in the middle. Make the plasterboard L-shaped or e-shaped if you can and you won't get cracks on the joints.

This old garden wall had ivy growing in / on it. It did not do it much good!

With some of the Rationel frames you can couple them in a stack. Have a look at their install literature or ask their tech dept.

Fit a shower pump into the cylinder cupboard. Single impeller if your cold supply is mains pressure, twin impeller if it is a cold water tank. The negative head ones have a small air chamber that pressurises when the flow stops so the pump will be ready primed.

You seem keen to get a report from a SE. Most will deal with this competently. Let us know what they say.

With these sorts of issues I can understand why this system has not been adopted by the housebuilders.

Smell is very difficult to establish and prove. Actual moisture and mould can be measured and photographed. Have you had anyone else in to verify the smell, like a mate or your partner? If it is really obviously bad you should go back to the housebuilder and register it as an official issue, stating that x people have also noticed it.

Well the SCC looks like it saved a lot of work. Was it expensive? Is the next pour to a different level?

The stainless steel ones seem pretty good. I had one fitted and it stopped the rats and has not caused blockages. Some of them have a mechanism that allows them to be fitted fairly deep in an inspection chamber.

We put standing seam on a roof and the customer had solar added. The were fixed by brackets that clamped onto the standing seams. The roof actually had a slight fall to north but it still worked fine. The standing seam was Kalzip type.

Agree with @Spinny if the rule was not around until 2023 your steel was already in. Point this out to BC. You can't comply with rules that did not exist at the time.

The chamber is fine. The old chambers with the traps often get blocked and are not used now. The rat blockers fitted inside the chamber work well.

What is the contractor's maximum allowable moisture?

I think the rules are about right. The planning officer can ask for further details of anything relevant if required. Measuring and detailing the height and position of all surrounding buildings, rooflines, eaves, windows, ground levels etc. is pointless for most applications.

Well that was fairly quick once you tracked them down. That looks a great location. Is it isolated?

It depends on what is around you. Sometimes full elevations of nearby buildings, always drains, covers, inverts, pylons. Our architects just use 2D as you don't gain much with 3D and it adds to design time.

Rendered concrete block outer leaf, 50mm cavity, Rockwool insulation between 140 studs, 40mm PIR, 25mm service cavity, resilient bars, plasterboard. Inexpensive and very effective. Less than 400mm.

If that is the case, make no provision for them. Do not suggest to tenants that they are authorised to install batteries. A world of liability for you.