Replacing Closet Flange

Discussion in 'Toilet Forum discussions' started by coalpiper, Jun 24, 2014.

  1. coalpiper

    coalpiper New Member

    Messages:
    9
    Location:
    Alberta
    Still ruminating over my closet flange challenges.

    So, it looks like one ABS closet flange can possibly be replaced, although access is tight. It would involve putting a 3" coupling on the horizontal line, a short length of 3" pipe, then a 3" elbow, and short 3" vertical pipe. Then up through the floor and put on the new closet flange.

    Quite a few glued joints. As this is on original construction, I worry a bit about the risk of cracking glued joints elsewhere in the piping system.

    Any experience out there with this sort of thing ? Or am I over thinking this.
  2. Terry

    Terry Administrator Staff Member

    Messages:
    15,122
    Location:
    Bothell, Washington
    You won't crack existing joints. That stuff is stuck together very well.
  3. coalpiper

    coalpiper New Member

    Messages:
    9
    Location:
    Alberta
    I guess the other thing is … what is the best way to check for leaks in the piping after the closet flange replacement ? In a new home build don't you do a hydrostatic test ?

    In the case of replacement after a new build, you don't really have that option (the hydrotest).

    So do you just run a bunch of water through the new fittings setup and check for leakage ?
  4. Terry

    Terry Administrator Staff Member

    Messages:
    15,122
    Location:
    Bothell, Washington
    They call that a running test.
    In the crawl? Or higher than that? It's a rare day that I would have a leak on 3"
    Very rare.
  5. coalpiper

    coalpiper New Member

    Messages:
    9
    Location:
    Alberta
    The flange is on the top floor of a 4-level split. There is some access underneath, from the garage.
  6. Terry

    Terry Administrator Staff Member

    Messages:
    15,122
    Location:
    Bothell, Washington
    Running test should be fine for that.
  7. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,825
    Location:
    Cave Creek, Arizona
    Before I did all that work, I would try to remove the collar. So far, I have not had any that were not removable.
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