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    Wornout's Avatar
    Wornout Posts: 1, Reputation: 1
    New Member
     
    #1

    Feb 15, 2007, 08:02 AM
    Cast Iron Toilet Flange
    I am replacing my toilet and found that the cast iron toilet flange is broken where one of the bolts that hold the toilet should go. This was a crescent shaped slot, but the outer rim is broken and missing. I was going to replace the flange, but can't see how it is fastened to the drain pipe. The house is on a concrete slab, but I can see the drain pipe move slightly when I pry on the flange. How do I remove the old flange, or is there a way to repair the existing flange?

    Thanks,

    Wornout
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
     
    #2

    Feb 15, 2007, 08:21 AM
    Your toilet flange's secured by a poured and caulked lead and oakum joint.
    Since they make a repair kit, (see image) for broken flange slots a replacement flange isn't needed. Simply slip the repair slot and closet bolt under the broken part and reset the toilet. Good luck, Tom
    doug238's Avatar
    doug238 Posts: 1,560, Reputation: 62
    Ultra Member
     
    #3

    Feb 17, 2007, 04:25 AM
    The repair kit mentioned is the most common repair done. It you want to replace the flange, put a rag or something in the pipe so nothing falls into it and gently break the old flange off by hitting it from the inside. Then install a compression flange inside the cast iron pipe. A compression flange has 3 allen screws on the top and a rubber ring that seals the pipe. Remember to secure the flange to the floor with plastic anchors and screws or tapcons.

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