Damp maybe?

Discussion in 'Subfloor Preparation' started by dazlight, Jul 11, 2012.

  1. dazlight

    dazlight Super Moderator

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    Had a few pics sent today of a job I need to look at. It has old quarry tiles down. But there is a basement under the floor. Does that mean there won't be a damp issue?
    Will do a test anyway. But because it's not direct to earth it should be ok. Shouldn't it?

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  2. mjfl

    mjfl Well-Known Member

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    Was there not a discussion on one of those before??
     
  3. dazlight

    dazlight Super Moderator

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    Before what? Not sure what you mean mate.
     
  4. Matt

    Matt Well-Known Member Staff Member

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    still can be damp.

    1- the moister below is absorbed by the floor above so can have high RH
    2- support pillars etc can transport moister through them. (think of two buckets with a pipe between, add water to one and it will level itself in both buckets)


    First time a used a water based compound was on a floor like that. Basement underneath, it blew. I soon learnt to test every floor and dont presume :confused:
     

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