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View Full Version : What do I replace my cast iron flange with for my toilet?


sparky99
Apr 4, 2011, 07:49 AM
I think there's is a softer, more pliable metal that hammered over the edge of my metal flange, which appears to be loose and I think it has become worn out, because I can't even put new bolts in the groves to anchor the toilet. Can I lift the more pliable metal to replace the flange and if so should I replace the metal flange with a plastic one? The toilet sets in my raised basement subfloor, which is plywood. Would appreciate any feed back, ehh?? Thank you, Sparky

massplumber2008
Apr 4, 2011, 09:17 AM
Hi Sparky...

Sounds like a lead pipe to me... ;)

You can try to peel the lead back up and then install a new brass closet flange (sold at plumbing supply store) for best result (see image). Here, the brass closet flange is beveled in a way that allows the lead to bend over the edge and still allow you to install the wax gasket and bolts properly. You could also use a plastic repair ring IF the repair ring is beveled.

If the lead tears at any point you can patch it using an epoxy putty stick. Here, rough up the torn lead pipe with sandpaper or wire brush and then knead the two-part putty to proper mix and apply being sure to smooth the edges to mate well to the lead.

You might also consider installing a twist and set flange although, most of the time these flanges do not fit properly into lead pipes.

More questions? Just let me know, OK?

Mark