heights for supply and drain lines for bathroom sink

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Steve_P, Sep 19, 2010.

  1. Steve_P

    Steve_P New Member

    Messages:
    41
    Location:
    East TN
    33" high bathroom sink/cabinet combo. What should the heights for the supply lines and drain be above the floor where they exit the wall? Thanks!
  2. Terry

    Terry Administrator Staff Member

    Messages:
    15,413
    Location:
    Bothell, Washington
    21" works, plus or minus for a 33" counter

    For a 30" counter, 18"
    The water can be higher then the drain.
    Last edited: Sep 20, 2010
  3. Steve_P

    Steve_P New Member

    Messages:
    41
    Location:
    East TN
    thanks
    one more question: once the cabinet is in and you trim back the stubs for the supply to put on the shut off valves, how far from the inside wall of the cabinet to you cut?

    I realize the answers for these questions will vary depending on who answers, just looking for opinions.
  4. Terry

    Terry Administrator Staff Member

    Messages:
    15,413
    Location:
    Bothell, Washington
    I allow room for an escutcheon, the shutoff and about 1/4" between.
    You can have them farther out too.
    For a quick measurement, I put the cutter on the pipe and put my finger between the wall and the handle of the cutter.
    I have no idea what distance that is, but it works for me.

    The drain is determined by location of the drain on the sink or lav.
    Last edited: Sep 20, 2010
  5. Gsalet

    Gsalet George the Plumber

    Messages:
    83
    Location:
    San Francisco
    I use a rule of thumb, From end of my thumb to my first knuckle about 1 1/4 inches for anglestops:)
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,237
    Location:
    Cave Creek, Arizona
    I put the drain between 17" and 19". The waters at 21". I eyeball the stubs at about 1 1/2" from the back of the cabinet.
  7. Steve_P

    Steve_P New Member

    Messages:
    41
    Location:
    East TN
    thanks for the input.
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