Bay window gap

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24 Jul 2024
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Hi,

I’ve recently had new windows installed, there seems to be a slight draught around the edges of the bays which I’m noticing now the temperature has dropped.

I took the attached pictures in the middle of installation but didn’t think to measure the gap at the time.

Question is does that kind of gap look correct for a bay window installation and should expanding foam be preventing a draught?

I’m waiting to hear back from the company, just wondering if I’m right to be concerned.

Thanks.
 

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Last edited:
The bay looks like it might be a tad small on the measurements, but they are a right bugger to measure, so on that basis I’d say it’s not excessive.

If it’s draughty, rip the trims off, cut out the foam and redo it.

are you sure it’s the frame and not the sash…sometimes the sashes aren’t adjusted properly and leak a bit.
 
I would have hoped that the window would at least meet the external render. A knockon/addon would have solved that gap in an ideal world. Hopefully they have foamed that gap trimming over it
 
Thank you both, I’ve got the company coming out to have a look next week so I’ll see what they say.
 
The company came and had a look, they suggested spacer bars could be fitted to close the gap but it wasn’t big enough.

We’d asked them not to fit the trims internally as we’re getting the room plastered so hopefully we’ll be able to close the gap internally with plaster.
 
I had my guy come out and he said the same thing he couldn't fit a add on due to the gap going big and small . Both our fitters have clearly measured the windows a tad too small

I had the room plastered it didn't make a difference. I think the best option is to get insulation wool and foam then cover with fascia
 

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