We got a new toilet installed and the next morning, there was water pouring into the room below from the ceiling. The thing is, the water started pouring down when the shower ran. Note that this was the first shower after the toilet was installed. We flushed the toilet many times throughout the night and saw no sign of leak. Did notice that there was some gunk/hair coming up in the shower. Still waiting for a plumber to come by to figure out what is going on. (Added note - the toilet did clog a few times in the weeks before the new toilet install. Also, the day of the install - after I think - I noticed that when I flushed the toilet, the shower made a gurgling sound. Toilet has not been clogged though. It is flushing fine.)

QUESTION - Is there any way the toilet install could be "connected"? I have no clue but it seems more like a clog or pipe issue vs. a problem with how they installed the toilet...

  • Depends on what the plumber has done. Doesnt inspire confidence Commented Mar 1, 2023 at 4:16
  • 3
    If it was a new toilet replacing an old toilet then they may have cracked, broken or dislodged a drain pipe which caused the leak. If it's a totally new install where there was no toilet before then I'd say they did something wrong. Commented Mar 1, 2023 at 4:44
  • There's nothing done in a typical toilet replacement that would cause a shower leak. Even if out-of-the-ordinary things were done, I would blame a piss-poor shower install before I would the toilet installers.
    – kreemoweet
    Commented Mar 1, 2023 at 8:05
  • @Platinum Goose: It was a replacement toilet. The leak seems to only be from shower. Not seeing any issues when we flush the toilet. If they cracked, broke or dislodged a drain pipe during the toilet install, would the leak also be with the toilet and not just shower?
    – Jill
    Commented Mar 1, 2023 at 15:12
  • @Kreemoweet - Thanks. The shower wasn't leaking before so I'm not sure about the install aspect. However, I'm still not sure it could really be from the toilet. In a case like this, does it make more sense to have the toilet install guy come back or an independent plumber to diagnose what happened?
    – Jill
    Commented Mar 1, 2023 at 15:15

1 Answer 1


A couple of possibilities:

  1. Typically the shower drain will join the toilet drain pipe under the bathroom floor. Perhaps the toilet installation caused the shower drain pipe to crack or separate by moving or shaking the pipes or perhaps a screw was driven through the shower drain pipe. It's possible this would happen in a way that leaks only from the shower and not from the toilet.
  2. It could be a coincidence. Perhaps the shower drain cracked or broke at this time coincidentally, or it was already cracked or broken (or an old glue joint wasn't glued) and the toilet installation just did something that made it start leaking.

Either way, in my opinion, the easiest way to diagnose and repair this is to break open the ceiling in the room below. It's soaking wet and ought to be replaced anyway, it will give you access and visibility to the problem, make it easy to fix, and allow the joists to dry. If the ceiling is drywayll just get a hand drywall saw and start cutting where the water is coming through.

  • Cutting the ceiling open is the next logical step +1, most likely cheaper than cutting the floor and possibly the shower floor open. Commented Mar 1, 2023 at 17:43

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.