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    rods's Avatar
    rods Posts: 2, Reputation: 1
    New Member
     
    #1

    Apr 12, 2008, 02:36 PM
    Tub on slab exposed to ground?
    I purchased a house a few months ago. This house has a slab on grade. I was trying to figure out where a musty smell was coming from in my master bathroom. I found that both my garden tub and my shower are exposed to about 2'X2' of ground underneath. This house is only 5 years old. Is this normal or just a shortcut that the contractor took. Should this be sealed or what? I have never seen this, but can't recall ever seeing underneath a tub or a shower on a slab.

    I am not convinced that this is the source of my problem.
    What would it take to get up to code.
    Thanks in advance
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
     
    #2

    Apr 12, 2008, 03:16 PM
    Hi Rods:

    Check out this link...

    https://www.askmehelpdesk.com/plumbi...ght=tub+dapout

    It discusses your question in great detail.

    Basically, it is not a code requirement to fill the hole. At a shower, I would have filled the hole for increased support under shower base. For tub drain I would not fill so I could access the pipes/fittings in future if needed.

    Check out the link I posted... let us know what you think... Mark
    rods's Avatar
    rods Posts: 2, Reputation: 1
    New Member
     
    #3

    Apr 13, 2008, 06:19 AM
    Thanks for the quick response. Its good to have a place to go to for such questions.
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
     
    #4

    Apr 13, 2008, 06:20 AM
    Glad to help Rods! Anytime.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
     
    #5

    Apr 13, 2008, 05:05 PM
    I found that both my garden tub and my shower are exposed to about 2'X2' of ground underneath. This house is only 5 years old. Is this normal or just a shortcut that the contractor took.
    This is normally the way we leave our dap outs unless we're told to do other wise. We leave them open so the tub waste and trap can be serviced if necessary. We also have the dry wall man cut in a access panel for the same reason. I wouldn't use foam to fill the hole because it will also cover the joints and if you develop a leak you won't be able to spot it. Good luck, Tom

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