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Drying out damp before painting

Discussion in 'Decorating and Painting' started by Sef1928172, 5 Sep 2021.

  1. Sef1928172

    Sef1928172

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    I have a spot of damp on a wall between kitchen and bathroom which was causing paint to peel off. I have scraped off the paint and am letting the plaster dry out (have put a dehumidifier in front and the plaster has visually lightened in colour a bit so hoping that it will dry out completely). See the picture attached

    My assumption is that the cause of the damp is condensation from the kitchen/bathroom climate.

    What would be the best approach/types of paint, or other damp proofing products for repainting this area once dried out, to hopefully avoid the issue returning?

    Many thanks for any advice
     

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  3. HERTS P&D

    HERTS P&D

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    What is on the other side of the wall? Post a picture.

    Andy
     
  4. Sef1928172

    Sef1928172

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    The other side is just tiled wall next to heated towel rail.

    The kitchen floor is tiled concrete so not sure if it would be rising damp.
    Thanks
     

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  5. HERTS P&D

    HERTS P&D

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    Ok, I thought it might be a shower on that wall that was leaking.

    Andy
     
  6. JohnD

    JohnD

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    the wet patch in your picture is typical of a plumbing leak.

    Is it a concrete floor?

    Does the washing machine leak?
     
  7. JohnD

    JohnD

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    none.

    mend the leak.
     
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  9. HERTS P&D

    HERTS P&D

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    Check the washing machine connection on the valve and at the back of the machine.

    Andy
     
  10. Sef1928172

    Sef1928172

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    yes it is a concrete floor. The surveyor though it would have been poured directly onto the ground

    I have checked around the washing machine and can’t see any sign of a leak but will keep an eye in it next time we do a load.

    For additional context, there is also paint flaking in the other side of the door, and above, which led me to assume humidity/condensation was the culprit.
     

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  11. JohnD

    JohnD

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    Is there a pipe buried in the floor (or wall)?
     
  12. Sef1928172

    Sef1928172

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    I don’t think so but can’t be certain without making a hole to investigate. The heating pipes are all external (in the bathroom) and don’t leak.

    The only possibility I can think might be the drainage from the bathroom. I don’t think it runs directly under there though.
     
  13. Sef1928172

    Sef1928172

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    Having had the plaster exposed for a while now, I have now noticed small crystals forming in the surface. Is this a sign of anything in particular?

    if I hack off the plaster to try to locate pipes (would they be buried within the plaster??), is there any type of plaster patching product to use as a patch up diy job to re cover before painting?

    thanks again if anyone has any further advice.
     
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