From Newsgroup: uk.d-i-y

I've recently lined a bay window pier wall with Celotex, all good, made a noticeable difference. What it has also done, however, is highlight draughts through the window frame around the trim pieces, where the frame meets the walls and adjacent frames. I think it's part draught, part just plain cold - but there's definitely a breeze coming though from somewhere. It was
especially noticeable last night, with the cold wind.

To try and treat this I was planning some judicious use of expanding foam beneath the trim pieces, and between the frames/wall. However, I can't get the internal trim off. There are some pics here:

https://www.icloud.com/sharedalbum/#B1mGFqhgJG22aVo

They're not very good, but show how the trim shattered when I tried to lever
it out. Then, the centre T piece that locates the trim between the frame won't pull through. You can see where I tried to pull it through with mole grips.

Anyone any idea how these things are fitted? Is it a captive latch that clicks into place and is only capable of destructive removal?

I could go in from the outside, but the trim looks more elaborate and it'd be more difficult to repair and re-seal. I do intend to seal round it when the weather warms up a bit. This is (obviously?) where the air is coming in.
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Cheers, Rob, Sheffield UK
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From Newsgroup: uk.d-i-y

RJH <patchmoney@gmx.com> wrote:

I've recently lined a bay window pier wall with Celotex, all good, made a noticeable difference. What it has also done, however, is highlight draughts through the window frame around the trim pieces, where the frame meets the walls and adjacent frames. I think it's part draught, part just plain cold - but there's definitely a breeze coming though from somewhere. It was especially noticeable last night, with the cold wind.

To try and treat this I was planning some judicious use of expanding foam beneath the trim pieces, and between the frames/wall. However, I can't get the
internal trim off. There are some pics here:

https://www.icloud.com/sharedalbum/#B1mGFqhgJG22aVo

They're not very good, but show how the trim shattered when I tried to lever it out. Then, the centre T piece that locates the trim between the frame won't
pull through. You can see where I tried to pull it through with mole grips.

Anyone any idea how these things are fitted? Is it a captive latch that clicks
into place and is only capable of destructive removal?

I could go in from the outside, but the trim looks more elaborate and it'd be more difficult to repair and re-seal. I do intend to seal round it when the weather warms up a bit. This is (obviously?) where the air is coming in.

Sorry no solution here as I have never seen that sort of trim. We have
frames in our conservatory that meet at 45deg but it just looks like a thin cloaking trim glued in place both inside and out, with the outer trim being wider than the inner one. I cannot say we have noticed any draughts through them.

I wish now when they replaced the roof with an insulated one I had looked
at how they fitted whilst the tops were exposed.

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