Reapply Worn Kitchen and Bath Caulk

Intact caulk is essential for maintaining the normal life expectancy of tile bathtub and shower enclosures. It's equally important for the long life of countertops and backsplashes. Considering how inexpensive caulking is, it’s a valuable line of defense.

The backing material behind tile may be water-resistant, but it is not waterproof. Particleboard backing used for laminated countertops is even more prone to water damage.

To find caulk that needs to be replaced, check the caulk around your sink, showers and tubs. Look for moldy or missing caulking. Pull it to see if any sections are loose.

Time — 30 minutes
Difficulty — Easy
Expertise — Ability to apply an even bead of caulk
Frequency — Once a year
Where — All US

Steps

1. Use the razor blade to gently scrape off the existing kitchen or bathroom caulk.
2. If the gap under the caulk in your kitchen or bathroom is damp, let it air dry or dry it with a blow dryer.
3. Apply masking tape to both sides of the gap to help create even edges when you apply the caulk.
4. If you’re caulking a tub, fill it with water and stand in the tub. The weight of you and the water makes the tub settle a bit and opens up the joint to be caulked.
5. Load the tube of caulk into the caulk gun. Cut off the tip of the nozzle at about a 30-degree angle; make the hole the same size as the gap to fill.
6. Place the nozzle at one end of the gap. Using steady force, push the gun's plunger until the caulk oozes from the tube.
7. Drag, don't push, the tip along the gap steadily to create one continuous bead — don't start and stop.
8. Smooth the caulk with a soapy finger, using light pressure.
9. Remove masking tape, if used.