How to Caulk a Toilet Base


There is an ongoing debate about whether on not to caulk a toilet. One camp says you should never caulk a toilet because it would "hide" a leak long enough to do significant damage to the subfloor should the wax seal fail. The other camp claims that you must caulk the toilet to provide a neat appearance and prevent debris and mold from accumulating in the crack between the toilet and the floor. The answer is to caulk the sides and front of the toilet, leaving the unseen back to provide an outlet for water if a leak develops.

Things You'll Need

  • caulking gun
  • tube of caulk or silicone
  • utility kinifed
  • damp cloth
  • Clean the surface of the floor and the toilet bowl base. Let both surfaces dry completely.

  • Cut a 45 degree angle on the tip of the tube of caulk and place it in the caulk gun. Run a bead of caulk along the sides and front of the toilet.

  • Run a damp finger along the bead gently to pick up any extra caulk. Use the damp towel to wipe off excess caulk as you go.

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