Re-caulk tub and shower

Why It Matters

Failed caulk lets water seep into the wall cavity behind the tile, causing rot, mold, and eventually expensive tile or drywall replacement.

Tools

• Utility knife or caulk removal tool
• Putty knife
• Caulk gun

Materials

• Mildew-resistant silicone caulk
• Rubbing alcohol or surface cleaner
• Clean rags or paper towels
• Painter's tape (optional)

How to Do It

1. Score and pull out the old caulk using a utility knife or caulk removal tool, working along the full length of the joint.
2. Use a putty knife to scrape away any remaining residue, then wipe the seam with rubbing alcohol or a surface cleaner and let it dry completely.
3. If you want clean edges, run painter's tape along both sides of the joint before applying the new caulk.
4. Load mildew-resistant silicone caulk into the caulk gun, cut the tip at a slight angle, and apply a continuous bead along the joint between the tub or shower base and the tile.
5. Smooth the bead with a wetted finger to press it into the joint and create a uniform seal.
6. Remove the tape if used, then let the caulk cure fully according to the manufacturer's instructions before running water over the seam.

Related Tasks

• Inspect attic Once a year
• Inspect basement Once a year
• Inspect crawlspace Once a year
• Lubricate door hinges and locks Once a year
• Seal tile grout in showers and floors Once a year