kohler shower drain installation

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by dkkll, May 7, 2011.

  1. dkkll

    dkkll New Member

    Dec 18, 2008
    New York
    installing a k-9135/k-9136 drain in my new shower
    the rough in guide does not state the size of the whole to be cut in the subfloor
    i am not sure if the flange is supposed to sit on the bottom of the 4 screw bases or on the rim around the flange
  2. cacher_chick

    cacher_chick Test, Don't Guess!

    Jan 5, 2008
    Test, Don't Guess!
    Land of Cheese

    Kohler Drain
    Last edited by a moderator: May 7, 2011
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  4. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona
    The top of the "flange" is even with, or slightly below, the subfloor/mortar preslope. Then the safety membrane is laid onto the sloped mortar base and clamps between the two pieces, usually with a bead of silicone to make a better seal.
  5. cwhyu2

    cwhyu2 Consultant

    Aug 11, 2007
    Cincinnati OH
    And it is always good to bevel the sub floor to fit the shower drain.Not just a hole cut in the sub floor.
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