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I had similar. I used a Stanley blade to clean up and cut back anything. Then caulked it with something printable, using silicone tool to make neat Then re painted.
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If your place is anything like mine I have cavities that are only sealed by the plasterboard and the cold/damp interface is in the wrong place, also there was no "backer" for plaster or caulk to adhere to.
Next summer I'm ripping out all the plaster and fitting cavity closers. I'm hoping that should clear 90% of my problem.
skinny
Grumpy_Git
@hazzelfrazzel
Does anyone have experience and a recommendation for filling small gaps between plaster and a uPVC window frame?
Our main bathroom has 2 external solid brick walls (old house). In some places around the window small black spots have started to form. No doubt it's mould from frequent condensation when it is cold.
I'm gonna kill the mould, sand back, prime with zinnser BIN, and then zinnser permawhite.
However, I have a couple of little gaps and cracks between the frame and plaster that need filling. Is caulk best for this, or a low modulus silicone? Googling doesn't really give a consensus, and there's a lot of results about adding a plastic trim, which is not what I wanna do. Picture attached.
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