Subfloor fix and new flange?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Tom M., Jul 2, 2012.

  1. Tom M.

    Tom M. New Member

    Messages:
    4
    I have to replace a flange and some 3/4 plywood around an upstairs toilet. It is 4" ABS pipe with an ABS/plastic flange. How do I replace the flange/sleeve? Can I insert a flange/insert into the existing pipe or will the smaller size "bottleneck" the toilet waste?

    Thanks! Tom

    Photo:
    http://www.flickr.com/photos/54361298@N00/7492183782/in/photostream

    Will this work? And does the new flange sit flush to the 3/4" plywood?
    http://www.homedepot.com/h_d1/N-5yc1v/R-202274073/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=toilet+flange&storeId=10051
    Last edited: Jul 2, 2012
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,267
    Location:
    Cave Creek, Arizona
    That flange will fit into a 4" fitting or over a 3" pipe. It will NOT fit into a 4" closet bend. SOME 3" hub closet flanges are sized to fit into a 4" pipe snug enough so they can be cemented in, but NOT all will work that way.
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