Basement bathtub install

Discussion in 'Shower & Bathtub Forum & Blog' started by chukakid, May 15, 2009.

  1. chukakid

    chukakid New Member

    Jan 27, 2009
    I'm helping with a basement finish and had the following question. Why does the overflow pipe from the tub go straight into the p-trap instead of the tub drain? Reason I ask, is we have rough-in problem with the location of the branch waste line which would go away if we went directly to the p-trap from the drain with a tee to the overflow. Any thoughts would be appreciated. :confused:
  2. Basement_Lurker

    Basement_Lurker One who lurks

    Jun 21, 2007
    I smash things and demand money.
    Victoria, BC
    There are two methods of installing a tub drain: a direct drain and an indirect drain method; the indirect drain is the most common method. The direct drain is the method you are hoping to use and it will work fine.
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  4. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    1. The conventional connection gives a degree of latitude in the location of the "P" trap.
    2. To go directly to the drain requires a different style of drain fitting, called a "toe outlet waste", and it has to be EXACTLY in the correct position when the tub is installed.
    3. You cannot use a conventional overflow set up with a tee after the drain and then an elbow up to the overflow. At least not if you EVER intend to be able to snake it when the drain plugs.
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