Is there a way to repair a crack in a porcelin toilet tank?
Yesterday I replaced the fill valve, flush valve, and handle. It looks like the toilet tank might have a very tiny crack in the bottom. The crack is running from front to back. It’s very thin, and hardly visible, I’m not even sure that it is a crack that runs all the way through. If it is a crack, I think might have overtightened one of the bolts that mount the tank to the bowl since the crack runs right through it.
The tank and bowl are yellow, so it will be hard to find a replacement tank in the same color, so if possible I want to repair it if possible. Is there a product that can repair the crack? Some sort of expoxy or glue or something like that?
Also is there any way to confirm that the crack is what is leaking and not something else? Thanks a lot for any advice!
From your description it sounds like you cracked it. To test for leaking you’ll want to dye the water with either some blue food coloring or an actual dye tablet. I don’t suggest trying to repair a cracked tank. Body weight and temperature variances may cause it to grow or expand over time. And you don’t want to be away from home with a leaking tank. Your best bet is to replace it.
Wipe the bottom of the tank dry with a cloth, feel around with your finger, you’ll find the leak. There may be some products you could plug it with, however being right on a tightening bolt could present problems. I would just replace the entire toilet.
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If it is cracked you can’t repair it, but all is not lost. You can seal it temporarily by draining the tank and drying it. After 24 hours of drying time put a bead of RTV along the inside of the tank where the crack is. Take your finger and push the RTV into the crack as best as you can, but still leave a build up on top of it as well. Use gloves if you are sensitive to RTV. Sooner or later you will need to buy a new tank, but this will work in the short term!!
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From your description it sounds like you cracked it. To test for leaking you’ll want to dye the water with either some blue food coloring or an actual dye tablet. I don’t suggest trying to repair a cracked tank. Body weight and temperature variances may cause it to grow or expand over time. And you don’t want to be away from home with a leaking tank. Your best bet is to replace it.
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Cracks get bigger they don’t get smaller buy themselves. Buy a new one.
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