Why does my tub gurgles when I flush my toilet, but not my sink??

  4 answers
  • Cindy Hagemann Cindy Hagemann on Jul 16, 2018

    You may have a clog in your pipes (since they are often connected) with if not treated/unclogged it likely cause major issues. Call a plumber and have it snaked out.

  • Ebbjdl Ebbjdl on Jul 16, 2018

    Hi Marilyn, Your tiolet and tub might be on the same drain pipe, and your sink is by itself.

  • William William on Jul 16, 2018

    The drain on the tub is lower than the sink but even with the toilet so it's gurgles due to some kind of blockage. First thing to check is the roof vent pipe. It can be blocked with debri, birds, or critters. When toilet is flushed the water displaces air in the drains and it needs to go somewhere. That is one of the jobs of the roof vent. The other job is to vent the sewer gas. If it's blocked the air finds the lowest pint to vent (the tub). If the vent is clear then you have a blockage further down in the sewer line

  • Marilynn Whelton Marilynn Whelton on Jul 16, 2018

    Thanks everyone for answering my question.