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  • After the windowframes were replaced in our apartment it became far colder, on close inspection it seems that the windowsill moved a a bit and the sealant doesn't quite fill the gap anymore. Peels right off and proper gale blows through the gap. Can I just fill it back up again with acrylic sealant and paint over it?

  • If it’s a deep gap I’d be inclined to squirt expanding foam in there all the way down, cut the excess, then finish with acrylic.

  • I always worry about the expanding foam expanding too much and blowing out stuff, or is there no need to worry about that? It's about 20cm deep.

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