What kind of caulk to use around toilet?

Diana Deiley
by Diana Deiley

How to caulk around a toilet? Is it a personal preference to caulk or not to caulk around a toilet base? What is the proper way to caulk? I have seen posts suggesting a bead of caulk under the toilet, then I've seen it placed around the base fixture. Thanks for the advice.

  9 answers
  • Bijous Bijous on Jul 27, 2018

    Yes, it is personal preference. Having said that, however, it never hurts to run a bead of clear caulk around. Hard to tell it's even there.

  • Amanda Amanda on Jul 27, 2018

    Hi Diana. I would caulk at the base. This will prevent from anything getting in between the floor and toilet base. I have younger children that sometimes don't make it in time, and it is easy to clean up. Otherwise some would get trapped and get stinky. I use a caulk gun and apply a bead where the gap is. Just like a steady line of caulk. Then you run your finger over it to almost flatten it out. This is harder for me to explain. I wish I could show you. I did find this video that should help. Good Luck!


  • Kim Kim on Jul 27, 2018

    I understand that it’s personal choice but caulking keeps mop water from flowing in and back out from under your toilet. Once the toilet is set (and shimmed if necessary) Clean all the surfaces and dry well. Run a bead of caulk at the intersection of floor and toilet. Use your finger to smooth out. Use a damp paper towel to keep your finger clean.

    Allow to set before using bathroom and open window for ventilation.

    i hope that helps


  • Oliva Oliva on Jul 27, 2018

    Clear caulk is the way to go on this project!

  • Kathy Gunter Law Kathy Gunter Law on Jun 05, 2019

    You should only be caulking at the base of the fixture to the floor. You can use a caulking tool to smooth but I always smooth it with my finger.

  • William William on Oct 25, 2018

    Make sure you use bathroom caulk. Has mildewcides in it. Do not use Flex Seal. It breaks down over time.

  • Linda Sikut Linda Sikut on Jun 05, 2019

    Here's a tutorial that will take you through the steps to caulk a toilet bowl. I hope this helps you. Wishing you the best.


  • Morgan McBride Morgan McBride on Jun 07, 2019

    Caulk is so easy to apply! Apply in the crack and use a damp paper towel to smooth flat.

  • William William on Feb 03, 2020

    If you caulk around the toilet, which I don't advise, leave a small gap behind the toile for any condensation that can occur under the toilet