How to repair a hole in toilet tank?

by Kmc30035521
My son broke off the bottom corner of his toilet tank. I have the porcelain corner and wondered if that flex seal would fix it. I’ve let it air dry for 24 hours so that it’s nice and dry. My husband doesn’t know and I’m trying to get it fixed because not any toilet will fit on the seal. It has to be special ordered and is very expensive. So any all ideas would be amazing! ~ Straight flushed in Alabama

  7 answers
  • Certainly worth a try! Now I am wondering about your toilet, what makes it so special?

    • See 1 previous
    • Ok, interesting story. Your toilet itself may be special but the flange it sits on is standard. If need be you can replace the toilet, and they do not need to cost a lot of money.

      Try the flex seal, you have nothing to lose by trying.

      Keep us posted!

  • Mary Hilbrand Mary Hilbrand on May 17, 2018

    You have to replace the seal when you install a new toilet anyway, so that really shouldn't be an issue.

    • Kmc30035521 Kmc30035521 on May 17, 2018

      The wax seal is not the issue it has something to do with fitting and bolting to the floor. It’s a special size that toilets available today won’t work

  • Alice Alice on May 17, 2018

    I found two different answers for you:

    A potter simply cannot refire a broken pot and make it whole again. The only way to restore such an object is by using "cold materials and process". The first step to fix broken pottery or a ceramic object is by mending the pieces with two-part epoxy adhesive.

    Repairing a hairline crack involves using silicone plumbing epoxy on the inside of thetank. Drain the tank completely, using towels to remove all excess moisture. Let thetoilet stand for a day or two with the lid off. The inside of the tank must be completely dry before applying the epoxy.

    • See 1 previous
    • Alice Alice on May 17, 2018

      Good. When I researched your question, there wasn't a lot of information to be found and I know you're not the 1st person this has happened to. Let us know how well it worked out.

  • Cindy Hagemann Cindy Hagemann on May 17, 2018

    Replace, it will leak.

    • Kmc30035521 Kmc30035521 on May 17, 2018

      Maybe buy me some time. Till pay day. Toilet is very expensive special order due to bolt size or something like that. We don’t have credit cards

  • Daniel D Brewer Daniel D Brewer on May 17, 2018

    Just replace the toilet. You will always fight the old one.

  • 27524803 27524803 on May 17, 2018

    You can glue the corner back on.... but it will probably leak... if not right away... then eventually.... you might be able to find a tank to replace it at a salvage yard... but unless it is the same manufacturer and model type.. it will leak .... for best results.... just replace it.

  • Janice Janice on Nov 06, 2021

    The flex seal may be worth a try! See if it lives up to all the hyper-advertising! :)