How to Replace Bathtub Caulking

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How to Replace Bathtub Caulking.

OLYMPUS DIGITAL CAMERAWhat is bathtub caulking? And why do I need it?

Bathtub caulking is the seal between the wall and the bathtub, and you need it so water doesn’t get behind the tub wall or leak into the walls causing damage.

Our bathtub caulking began to show signs of mildew, and no matter what cleaner that I tried it always came back.

I like to take on these projects myself as this one is really not that difficult.

You don’t really need to be an expert, all you need are the proper tools, a somewhat of a steady hand, and some patience. I replaced my bathtub caulking just the other day.

The job only took me about an hour, and following is a step-by-step of how I did it.

Step 1 – Remove the old caulking

Remove old caulkingStart by removing the old caulking. Tools required for this are a utility knife or putty knife. As you can see in the picture I chose a putty knife.

Start in a corner and get the tool under the old caulking either from the wall or the tub.

Once under the caulking push along the surface to remove the old caulking.

If your tool is on the surface of the tub be careful not the scratch the tub, especially if you’re using a utility knife. Continue until all of the old caulking is away from the wall and tub.

If you have some difficult spots 3M makes a product called Caulk Remover. You apply this, wait about 15 minutes for the old caulking to soften up, and continue, it also cleans up with water.

Step 2 – Clean the area

Clean the areaNow you want to clean the area.

Wipe the entire area, to clean of the old residue from the wall and tub using a rag or paper towels.

Do not use soap, as this will create a film that the new caulking may not stick to.

After the area is cleaned use rubbing alcohol to clean the tub and wall again.

The alcohol will remove any soap and film residue left behind.


Step 3 – Apply new caulking

OLYMPUS DIGITAL CAMERANow that the area is clean and free of residue.

It’s time to apply the new caulking. I use DAP Kwik Seal, Kitchen & Bath Adhesive Caulk.

I use the tube, but you can also buy it in a canister. If you buy the canister will need a caulking gun.

Cut the tip of the tube at a 45 degree angle, you’ll see the markings on the tip as to where to make the cut.

Apply the caulking by squeezing the tube or pulling the trigger, if you’re using a caulking gun. Apply steady and easy pressure around the tub.

Step 4 – Trim the caulking

OLYMPUS DIGITAL CAMERAI use this handy little tool to trim out the caulking. You can find one these at any hardware store or buy a complete kit that includes the caulking and the trim tool.

Just remember to keep the tip focused on the caulking and the adjacent edge flat on the tub, and wipe off excess with a paper towel.

Here is a complete kit with everything you need to do this easy job.



I like to write about things that I know about. My passion for a good cigar, our family recipes, television, movie reviews, travel, and product reviews. The products I review are goods that I own and have used. I’m a Industrial Engineer working in the automotive business. When I’m not working or writing I spend as much time with my beautiful grandchildren as I can, Bobby, Tyler, and Giada. Thanks for stopping by and I hope you enjoy 🙂

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Author: Jackie Jackson

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