Another toilet flange question

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miltf

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Hi,
I have removed our old 1930's toilet and discovered that the flooring and the 4" cast iron pipe are connected by a lead sheet collar. I am thinking to install an Oatey twist and set flange and bolt it to the flooring. Is this right? How can I ensure a good seal to the pipe which does not have a smooth surface? What is best: cast iron flange, abs flange, ss covered flange?

Any other ideas? I am reluctant to remove the lead and start over.

Thanks,
Milt
 

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Jadnashua

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None of those are approved or reliable in this situation. If the lead is intact, a plumber can lead on a new brass or bronze flange. If it's not, then it gets much more involved - the lead needs to be removed. Then, you have the choice of using whatever material you wish, pvc, abs, cast iron, or even copper to rebuild the pipe and install a new flange. There are no friction or expansion flanges designed to work inside a lead sleeve.
 

miltf

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None of those are approved or reliable in this situation. If the lead is intact, a plumber can lead on a new brass or bronze flange. If it's not, then it gets much more involved - the lead needs to be removed. Then, you have the choice of using whatever material you wish, pvc, abs, cast iron, or even copper to rebuild the pipe and install a new flange. There are no friction or expansion flanges designed to work inside a lead sleeve.

Its not easily seen, but the lead only goes down about an inch to where the iron pipe starts. I was thinking the flange extensions would fit against the iron.
 

Wptski

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If that's lead which is soft, where is/were the closet bolts that hold the toilet down? Or was something else used back then?
 

JohnjH2o1

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Many didn't use flanges they used closet screws that fastened the toilet to the floor. Not a good idea.

John
 

Jadnashua

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SOmetimes, they'd lead a brass flange to the lead after it was wrapped over it (the lead, that is).
 
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