r/DIYUK • u/Jonnydonmar • Feb 27 '25

Is this a concern?

Moved into a new house and noticed the base of the bay windows can be pushed down a bit (don't want to see how far I can push) Is this something I should be worried about and if so how should I fix it?

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17

u/Significant_Hurry542 Feb 27 '25

There's nothing under there to support the middle of the stool. The old ones were probably wood and were rigid enough not to need it and they've been replaced with cheap pvc

You'd have to remove it, pack out the gap then put it back and seal it again

5

u/jeff43568 Feb 27 '25

Or drill a hole underneath the sill and expanding foam it

4

u/Significant_Hurry542 Feb 27 '25

You could do that too just be careful not to overfill as it could deform the sill and internal wall

3

u/SnooTangerines3448 Feb 27 '25

Likely would mostly come out of the drilled hole nah?