UPVC Window Not Sealing in Middle - Repair or Replace

3 Oct 2017
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United Kingdom

So I have three double glazed windows that seem to be exhibiting this issue, but one is by far worst that the others.

The windows are UPVC and were installed in the property when I bought it so no idea of age but definelty not “new”.

The window opens upwards, hinges at top and Espag lock at the bottom (no adjustable cams). Rubber seals look like they are “integral”, but they haven’t degraded and have reasonable spring left in them. I get good closure at top and bottom of the sash. However towards the middle of the frame the gap opens up on both sides (worst on the wall side), letting in a draft and traffic noise and has a gap big enough to fit a beer mat in without any friction. I have included pictures.

Therefore my question is, is this repairable? Or is it a whole new window and frame type of problem?



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Common issue on large top hung windows.
Only option really is to put in a slightly bigger gasket, Possibly just on the sides.
Or new window in a different design
Thanks for the reply Gazman. I’ll have a look into replacement gaskets.

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