Mr Punter

Unless the pool is worthwhile for you, you could have it filled in. An outdoor pool in England can sometimes be a white elephant.

I have had big 5 leaf bifolds 5m. and when opened back they tended to slump. I have also had 3 leaf 3m. and they were better. Lift and slide would be my preference now. More controllable and airtight.

+1 I changed a couple of door handings and although drawings were updated, the electricians worked from an old set of drawings we had sent out for quote purposes, so there was some messing to get light switches in the right place.

So have you just parted ways, calling it quits, or is one of you wanting some money from the other?

Is it now the case that the roof is correctly membraned by others, Velux properly fitted and you are waiting on the Velux flashings to complete the roof?

You can see why mould likes these cold corners!

Are the pics you took with your under cupboard lights? Can you do a photo in normal daylight?

You can strain a bollock if you lift it on your own.

They are seriously heavy. 2 man lift.

@nod will be proud of you.

I would be filling the awkward gaps with decent mineral wool. It is far easier to use than cutting bits of PIR. Fill the whole void where you have the outriggers and any gaps where new meets old.

Aluminium is a good conductor so can easily act as a bridge between colder air outside and warmer air inside. If any part extends from outside to inside without a good thermal break it will attract condensation. To identify drafts you can go round the perimeter with a candle on a breezy day and see where it flickers.

A Building Control inspection does not absolve your contractor of their responsibility to design and construct to standards. They should have designed the roof with a 1:40 fall.

It sounds like a combination of poor fabrication, poor install and poor quality sealed units. I don't know how the profiles perform. I think they are Deceuninck.

Yes. Stop worrying and move on.