concrete slab no flange 3.5ID cast iron

Discussion in 'Toilet Forum discussions' started by bob123, Mar 11, 2007.

  1. bob123

    bob123 New Member

    Mar 11, 2007
    While renovating my home bathroom, I found the toilet sits directly on the slab (with wax ring) and no flange at all. Bolts were cemented into the slab. Pipe underneath is cast iron with 3 1/2 or perhaps 3 5/8 inside diameter. House built in 1956. Any suggestions on what to do? Thanks in advance...
  2. enriquehobart

    enriquehobart Plumber

    Mar 7, 2007
    Plumbing Apprentice
    You could try two things:

    1) Hire a plumber to put a flange in.

    2) Put a new wax ring down and reset. Maybe a bad idea?

    If you go with option 1) Inform plumber and tile guy of your flooring plans if applicable. The flange should wind up being on top of the finished floor.

    I'm an apprentice plumber (1.3 years). Would love to see a pic of that or run into it sometime soon on the job!

    Good Luck!
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  4. TedL

    TedL New Member

    Sep 17, 2006
    NY Capital District
    Look for a flange like this

    at HD or any plumbing supply house. Jones-Stephens makes comparable items. Also get four lead anchors fir #14 screws, and get 4 #14x 2 inch stainless screws.

    Use a wire brush to clean up the inside of the pipe. Mark te hole locations, drill for the anchors, insert anchors, insert flange, insert screws. Total materials, $25 -30.

    I just did this in a similar setup.
  5. coz

    coz New Member

    Feb 27, 2007
    what ted said is how i do it also.
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