[Wornout]

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]

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]

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.