Raising floor to avoid slab disturbance

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by apjseb, Apr 20, 2008.

  1. apjseb

    apjseb New Member

    Apr 20, 2008
    Looking to raise flooring (building platform) to accomodate moving drains etc... to swap tub and sink location in bathroom with slab foundation. What are the limitations? Could the tub be swaped end to end with a 4" subfloor.
  2. kordts

    kordts In the Trades

    Oct 15, 2005
    industrial service plumbing foreman
    exurban Chicago
    That is such a bad idea from so many angles. Put the plumbing where it belongs.
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  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    The trap needs to be under the tub's drain. Without taking the old trap out, you can't run the output of one trap into that of a second one, plus, the depth of a trap and the required slope would require a higher platform. Tear up the slab and move things as required...works better and it won't look like an afterthought. Really bad idea to raise the floor.
  5. Redwood

    Redwood Master Plumber

    Dec 15, 2007
    Service Plumber
    Raising the floor is oh so handymanish!
  6. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    There are a lot of limitations and only a plumber at the site could define them for your job. The only time your idea would even be considered would be for a post tensioned slab that cannot be cut for any reason. And in that case a moving to a different house might be a wiser choice.
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