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Damp Bedroom Wall

Discussion in 'Building' started by Block642, 27 Apr 2012.

  1. Block642

    Block642

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    Location:
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    United Kingdom
    Hi,

    I have an old (1860) cornish cottage. The walls seem to be built in a mixture of mud and stone and we have a damp patch near the ceiling in the bedroom. The wall is inside of the gable end.

    I have considered the following:
    - There was an old flat roof extension joining on to the pitched roof but this has now been replaced with fibreglass.
    - There is a chimney directly above the damp. It has a good cowell on it, the render is all solid and I had the flashing replaced at the same time the flat roof was done.
    - There were a few cracks in the exterior render, but these have all been chased out and filled by a builder.

    The next thing I am going to consider is having the whole of the exterior wall re-rendered (or cement washed) as recommended by a friend.

    Anybody have any suggestions?
     
  2. joe-90

    joe-90

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    It's nearly always condensation from the chimney.
     
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  4. noseall

    noseall

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    As Joe says, chimney masonry can throw all kinds of unusual damp scenarios at you without actually having any external (rain) water ingress.
     
  5. Block642

    Block642

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    Thanks for the quick replies!

    The chimney was lined about 2 years ago with a flexible metal liner. Any suggestions on how to stop the condensation coming through?
     
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