How to Re-Seal a Bath

Over time, through every day use, the sealant used to prevent water leakage from a tub or shower can discolor, become unsightly due to mold or it can fail.

Water damage may occur from sealant that needs to be replaced.Water damage may occur from sealant that needs to be replaced.
Most sealants rated for bath use have a lifespan of approximately 10 years due to constant exposure to water. Properly resealing a bath will not only help to restore the bath to its original look, it will prevent water from escaping and potentially causing damage to the floor or walls in the bathroom.

Remove the bath's existing sealant using a utility knife or the flat edge of a standard screwdriver. Hold the utility knife or screwdriver at a low angle and gently scrape away the existing sealant.

Mix mildew cleaner following the instructions on the bottle. Submerge a clean rag into the bucket and thoroughly wipe all the areas where sealant was removed. Allow areas to dry before proceeding.

Cut the tip of a caulk tube containing caulk rated specifically for the bath at a 45 degree angle using a utility knife.

Insert the tube of caulk into a caulking gun. Depress the caulking gun trigger until caulk oozes out of the tip. Wipe the tip clean.

Place the tip of the caulk tube into a seam using a corner as a starting point. Depress the caulking gun handle using constant pressure. Once a bead of caulk is started, move the caulking gun along the seam until a stopping point is reached. Remove the excess caulk by running a wet finger over the bead. Doing so will smooth out the bead giving it a uniform look. Dispose of excess caulk.

Continue caulking until all areas have been caulked. Follow the manufacturer's instructions on the tube of caulk to allow for proper drying time. Not using the bath until the caulk has cured will ensure the bath is sealed and protected against water leakage.

Things You Will Need

  • Utility knife
  • Standard screwdriver
  • Clean rag
  • Bucket
  • Mildew cleaner
  • Caulk rated for bath use
  • Caulking gun
  • Damp rag

About the Author

Ryan Carter began writing in 1996. He has created content for television, radio and online publications. Carter holds an Associate of Arts in psychology from Delta College and a Bachelor of Business Administration in marketing from Saginaw Valley State University.