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  1. Crystal

    Waterproof membrane under concrete slab

    Thanks for your information. I believe the building was originally approved as a double garage with a bathroom and rumpus room. Thanks, Crystal
  2. Crystal

    Waterproof membrane under concrete slab

    Gosford council. Thanks, Crystal
  3. Crystal

    Waterproof membrane under concrete slab

    I think it is a requirement for a habitable dwelling and my Surveyor asked me whether there was a "membrane under the concrete slab to stop damp rising."
  4. Crystal

    Waterproof membrane under concrete slab

    I'm happy to throw plenty of money at this problem to fix it because the alternative (knockdown and rebuild) is very expensive but I don't think that is what you meant!! :rolleyes:
  5. Crystal

    Waterproof membrane under concrete slab

    So what do I need to do to obtain council approval if the membrane is not there? Thanks, Crystal
  6. Crystal

    Waterproof membrane under concrete slab

    Hi Forumites, I have a granny flat I'd like to get council approved. My concern is that there may not be a waterproof membrane under the concrete slab. Is there any way to add a waterproof membrane? Can I keep the granny flat and jackhammer the concrete and pour new concrete over a membrane...
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