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Damp floor

Discussion in 'Floors, Stairs and Lofts' started by bsr, 21 Nov 2020 at 9:00 PM.

  1. bsr

    bsr

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    Hello

    This living room (1930s house) suffers from damp and condensation. Placing any furniture against the external wall leads to mould on it. Not black spots but actual growths!

    Taking the carpet up shows this. The gripper is badly rusted and the underlay has rotted where there is damage to the hard lino tiles.

    When I change the carpet what is the best solution? Do you agree there may well be a failed damp course and I should epoxy damp proof the screed? Above or below the lino tiles? I suspect the tiles are held down with bitumen which may be acting as a waterproofer.

    Thanks

    DSC_0041.JPG DSC_0042.JPG
     
    Last edited: 21 Nov 2020 at 9:07 PM
  2. JohnD

    JohnD

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    is it a concrete floor?

    if you draw a line between the external stopcock (next to where the front gate was, when the house was built) and the internal stopcock (underneath where the kitchen sink used to be, when the house was built), does it pass under or through this wet floor?

    What is on the other side of the wall?
     
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  4. tel765

    tel765

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    Mould or dampness on items placed close to external walls indicates a severe condensation problem. There's masses of info and pics about this - much of it posted recently if you search.

    Some kinds of "growths" on walls can be signs of a more serious rot problem - can you post pics of the growths on your furniture?

    Are the vinyl tiles covering an old chimney breast hearth area?

    Is the floor(s) solid?

    Why not post pics showing the exterior at ground level?

    Dont do anything until you've discovered the cause or causes.
     
  5. dazlight

    dazlight

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    Get the tiles all up.
    Do the ardex NA Dpm system.
    Screed floor at 3mm ardex NA
    Apply Ardex DPM1c on floor and up a couple of inch on the walls
    Ardex NA again.
     
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  7. JohnD

    JohnD

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    but don't do that before you've found out where the water is coming from, and rectified the source.

    Covering up damp does not cure it.
     
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