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Thread: Another toilet flange question

  1. #1
    DIY Junior Member miltf's Avatar
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    Default Another toilet flange question

    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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  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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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.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    If the lead is in good shape there is no need to solder a flange onto it. Just straighten the folded section of lead and slide the new flange over it. Then fold the lead back over the flange. Use the shorter flange in the link.
    http://www.siouxchief.com/Drainage/R...nge-Ring.7H0Q5

    John

  4. #4
    DIY Junior Member miltf's Avatar
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    Quote Originally Posted by jadnashua View Post
    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.

  5. #5
    Retired Machine Repairman wptski's Avatar
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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?
    Bill
    Retired Machine Repairman
    Just a DIY'r

  6. #6
    Plumbing Contractor for 49 years johnjh2o1's Avatar
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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

  7. #7
    Retired Defense Industry Engineer jadnashua's Avatar
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    SOmetimes, they'd lead a brass flange to the lead after it was wrapped over it (the lead, that is).
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  8. #8
    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    Quote Originally Posted by jadnashua View Post
    SOmetimes, they'd lead a brass flange to the lead after it was wrapped over it (the lead, that is).
    The lead was soldered to the brass flange.

    John

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