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Green staining on first block

  • 03-09-2014 6:46pm
    #1
    Hughesero
    Registered Users, Registered Users 2 Posts: 4 ✭


    Hi I am currently building my house. We have all blockwork complete and should have roof started next week. I recently noticed some green stains on the first row of block above rising wall in the house.

    I am concerned that this is rising damp. I am pretty certain the builder ran a dpc above rising wall level and I know for certain that we laid a radon membrane below sub floor level. has anyone ever had any experience of this before.

    Could this staining just be from the rain that has fallen inside the house?


Comments

  • #2
    mickdw
    Registered Users, Registered Users 2 Posts: 23,688 ✭✭✭✭mickdw


    Good chance its due to dirty builders pissing inside the house


  • #3
    Drift
    Closed Accounts Posts: 1,395 ✭✭✭Drift


    Are you using a lightweight/low density block at the bottom of your wall?

    I've seen these stain green with lesser exposure to moisture than I would have expected. (i.e. Rain over the duration of a build)


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