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Fixing plasterboard cracks

Discussion in 'Plastering and Rendering' started by cracks2020, 23 Dec 2019.

  1. cracks2020

    cracks2020

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    These pictures are of the underside of the top of some bedroom windows. As you can see, there are cracks where the horizontal meets the vertical, but I have a couple of questions.

    1) Why do the cracks suddenly go diagonal as they head towards the room?

    2) what's the best way to fix this?

    Thanks!

    20191223_184547.jpg 20191223_184404.jpg
     
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  3. motorbiking

    motorbiking

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    If you aren’t a confident plasterer you can get readimix at toolstation or similar or just use polifiller. Apply with a clean plaster knife and sand when dry.

    it looks like heat expansion in the ceiling joists .
     
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