Sealing around UPVC Windows

May 17, 2024 Last reply: 2 years ago 3 Replies
R

I've just had some work done on the house, including complete repointing. As part of this they agreed to seal around the windows (2 eqaul sized panes, top one opens), which for some reason had nothing used when installed about 10 years ago - just some remnants of foam.



They didn't want to do the arched area at the top - I've done that now using facia board, and sealed around that. I'm not sure about the bit between the sill and the window frame. They've left that too for some unspecified reason. I can see how it might help the very limited drainage requirements (there are no other drainage points that I can see, and the opening light does have some holes knocked into the frame), but to my eye it does look a mess:



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I could I suppose tidy up the burred plastic, but I'd rather just silicone it and be done. Looking around other windows, most seem to be sealed. What's the best way to finish?


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P

I've just had some doors installed by a local firm, new to me, and am much impressed by their use of beading arond the edges - it looks much tidier. This work prompted me to look at the windows, and I see that some of the sealant on two ground floor windows installed about 14 years ago has failed, rainwater has been getting it, so I am going to get some quadrant beading to make sure that it doesn't happen again. Download photos from

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R

Good grief yes - looks a lot better with the quadrant. Mind, couldn't look much worse than the original!

I did talk with the builder about the need for masking tape, and peeling off before the selant goes off. Seems he had other ideas :-(

I found this stuff really good at lifting silicone btw:

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A

THat's the standard way of doing it now. The quadrant moulding (sometimes they use flat narrow UPVC strips) is superglued to the frame and the joint with the brickwork sealed with clear silicone sealant.

This covers all the years of overpainting that has got onto the brick at the same time.

Using what looks like brown mastic sealant with a white UPVC window is really naff.

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