Mr Punter

Structural warranties are a bit strange, as the cover is often for 10 years with a one-off premium. Rebuild costs in 10 years could possibly double so it is difficult to judge what level you would need.

Threshold details are a right pain. I guess he is concerned that there may be cracking between the different substrates. Who knows if he is right? I guess you either do as he asks if he is willing to take responsibility in the event of it being defective or you leave it as is and you take the responsibility. And maybe stop wearing stilettos around the house.

I think you need to increase the cover. Sadly it will probably significantly increase the premium.

A photo would be useful. Mostly sinks are supported all round, either by kitchen unit carcase or by worktop.

I see what you mean about the slight plum tinge but there is not much you can do about it now. Once you have fascia, gutters and external wall finishes installed and after a year of weathering I doubt you or anyone would notice. I had some dark grey Sandtoft 2020 clay tiles fitted on a project and was surprised that the grey colour was a coating rather than the natural clay colour.

Yes, an error there. It would take a lot of paint to cover 1.5km2, as it is 1.5 million square metres and would take about 150,000 litres of paint to do a single coat.

Keep the windows and doors open during the day when it is warm and dry outside. If you have a dehumidifier, close doors and windows and run it at night.

Opening and stirring paint, moving hoses, cleaning up, moving sprayer, demasking. They were 3 x 3 storey houses. The spraying was less than 2 days. A lot of paint. They also had a roller that was fed paint by a hose that they used for rendered walls, so no faffing with a scuttle.

Spraying is quick but the prep can take ages. Also, any touching in looks bad and tape and fill jointing really shows up under some lighting. I had some houses sprayed and they had a team of 4 with 1 guy on the nozzle.

Yes I would fix a temporary timber to the face of the brickwork and cast a sand cement infill on top of the ali cill for the back of the first paver to rest on.

I am not sure of your setup but a raised tray can help if the fall is tight. They can look fine and can allow better access. Noggins or joist trimming may also be an option.

And I think there may be a small issue with the dust extraction...

If it is the case that you could buy the plot without needing to sell your place it would be a more compelling proposition. Is your offer subject to anything else (planning, easements, etc.)?

I thought you were going wall hung, hence the frame?

What is on top of the XPS? Is the garage heated / "conditioned"?