Floor or bathtub first

Discussion in 'Shower & Bathtub Forum & Blog' started by T_Hartigan, May 8, 2009.

  1. T_Hartigan

    T_Hartigan New Member

    Nov 28, 2006
    Looking at replacing alcove bathtub and floor (vinyl). Most likely it will be another vinyl product for the floor.

    Should the tub sit on top of the finished floor, or is it best to have the tub replaced and then have the floor installed.

    Maybe a dumb question.


  2. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    You can do it either way,


    If this is a replacement, then you may have to shim to level the new tub.
    That will leave a gap and some shims at one end.
    By installing the tub first, you can shim, then put the underlayment up to the tub, hiding the gap, and holding the tub tight to the alcove walls.

    It also makes it less of a step to get into the tub.

    The best choice is to install the tub first,
    And then the flooring.
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  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    In new construction, the tub is installed often before all of the walls go up so it's there before any finish work happens. The apron typically sits on the subfloor.
  5. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    The only problem with installing the tub first is that the seam at the floor, will then cause a leak in the lower level if the grout/caulking breaks away from the tub. It does not happen when the tub is on top of the flooring.
  6. btidy

    btidy Guest

    sit the tub on top of the finished floor
  7. kingsotall

    kingsotall Plunger/TurdPuncher

    Aug 17, 2008
    Hand copper part cleaned ready to go
    Flagstaff, AZ Sitting on an upside down 5 gallon b
    Only dumb question is the one Ian... I mean is the one you don't ask!
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