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Thanks so much bud, that means a lot! Not too stressed as things will dry out and windows will get sorted but don’t want it to push things too far back (we won’t be able to fit plasterboard and things like that internally until we know there’s no water coming in behind anything)..
I popped out again to get another couple pictures of it and noticed this on the top opening window closest to the back door. It doesn’t seem to be sitting flush to the outside and the seal has been damaged by the bit inside the frame. It only seems to be happening on that one side like it’s dropped a little or something and the wood on the frame on that side isn’t quite flush. By the time I’d looked at that one inside and out it was too dark to check the others properly but I’ll try and get that today. I think this might be a separate issue as that isn’t where the water is coming in though, it seems to be from between the frame and the pane..
@JonoMarshall completely agree! It’s the frame company Norscot that make their own windows so I know it will get dealt with internally fortunately. I’ve forwarded all the photos onto them and it’s being passed around to see what can be done.
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Creek_Tebsin
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Water will always get past the external seal around the glass, blown in by wind pressure and gravity.
Double glazed windows have a drainage system, below the glass, to prevent the DGU sitting in a pool of water. This is usually created by sitting the DGU on some plastic packers and a few holes or slots allow water to pass down through the frame.
Ive had plenty of leaking UPVC windows and think it's because the air pressure from the underside of the drain holes prevents the water draining. Once the bottom of the system is full to the inner sight line, it overflows inside.
Making sure the drain slots at the bottom are clear and creating a couple of new slots high up on either side seems to have sorted windows that I've looked at. Probably because it equalised the air pressure above and below the pool of collecting water and it can flow outwards as intended.
user69121
All your updates are appreciated, even the tough ones.