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

What might be some possible solutions?

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1 Answer 1

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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.

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  • 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
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    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
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    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

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