I washed bucket of wet drywall compound down my toilet. Will it clog the pipes?

What might be some possible solutions?


1 Answer 1


Water-based joint compound can still settle and harden to a degree that it causes clogs, though that's somewhat unlikely given the amount of water in a toilet flush. I'd be running water for say half an hour at the best rate you can muster. It might help to fill a utility sink or bathtub (or several), then release that in a gush. Most of the compound will probably wash away and be diluted, preventing downstream issues.

If you have any indication that a blockage has occurred, you'll need to borrow, rent, or buy a suitable plumbing auger and run the pipes to dislodge the hardened material.

  • I suspect that some sort of acid might be used to dissolve the hardened compound. Of course, acid might damage the pipes and kill the "good bugs" in a septic tank, so some care is necessary if acid is used.
    – Hot Licks
    Sep 27, 2022 at 19:19
  • 3
    Acid is not needed. Drywall compound is water soluble. That is why your are getting so many recommendations to continue running water down the drain.
    – RMDman
    Sep 27, 2022 at 19:36
  • 1
    Acid would be very difficult to apply in a localized manner to such an extent that a thick gob of compound would be removed. I don't consider that worth doing.
    – isherwood
    Sep 27, 2022 at 19:37
  • If water dissolves something, generally hot water (not boiling) dissolves it faster.
    – RetiredATC
    Sep 28, 2022 at 3:19

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.