(206) 949-5683, Top Rated Plumber, Seattle
Page 2 of 2 FirstFirst 12
Results 16 to 18 of 18

Thread: Flange diameter too wide / Wax ring problem

  1. #16
    DIY Senior Member Smooky's Avatar
    Join Date
    Apr 2011


    I think what HJ was talking about was finding a pipe section with a similar inside diameter to the internal pipe in your toilet flange. Cut a section of the pipe so it sets on top of the existing pipe and comes up to the level of your toilet flange. Then caulk the annular space between this new pipe and the toilet flange with something like J-B Weld so that it is even all around. That should give you more surfaces to set the wax ring on.


  2. #17
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    You could use 100% silicon caulk to seal that gap as well...since it is all inside the pipe, the only time it would leak out is if there were a plug in the drain and the water backed up. The wax seal would likely also fill that gap, which would be a 'normal' diameter for the ring. That extra stub of pipe is essentially just a filler to make the hole smaller.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #18
    DIY Junior Member dtravis2's Avatar
    Join Date
    Aug 2013


    I tried the method I posted about, but it just smelled funny downstairs and I wasn't sure why, so I have decided to try HJ's and Wjcandee's idea of using PVC pipe and a filling in around it with the compound/epoxy/stuff.

    With that said, I measure the diameter of the hole, and it is 3 3/4", but you had suggested a 4" pipe, so that means when I put the pipe on, there will be a 1/4" lip still there. Is this going to be an issue when all is said in done? Sewage getting caught on that lip? etc?



Similar Threads

  1. Inside diameter of Toilet flange too big!
    By bogeeb in forum Toilet Forum discussions
    Replies: 3
    Last Post: 05-18-2011, 09:04 PM
  2. Well hole diameter problem
    By WBSisson in forum Pumps and Tanks Well Forum & Blog
    Replies: 19
    Last Post: 03-31-2009, 11:49 PM
  3. Is water spot size affected by flange diameter?
    By chrisexv6 in forum Toilet Forum discussions
    Replies: 3
    Last Post: 12-28-2008, 02:11 PM
  4. Closet Flange Diameter Too Small
    By rleroux in forum Toilet Forum discussions
    Replies: 1
    Last Post: 10-08-2008, 05:39 AM
  5. Large diameter shower arm flange/escutcheon
    By jdkimes in forum Shower & bathtub Forum & Blog
    Replies: 5
    Last Post: 11-15-2004, 11:09 AM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts