How to Caulk a Toilet

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Unfamiliar with the term “caulking a toilet”? Don’t worry. You’re not alone. Despite its perplexing name, caulking a toilet isn’t as hard as it sounds.

In fact, with just a few simple steps and some supplies from your local hardware store, you can master the art of caulking and have your toilet looking good as new. So if you’re interested in learning how to tackle this seemingly complex project, here we are to get you on the right track!

Why Should You Caulk Around a Toilet Base?

No matter how well you care for your toilet, it’s inevitable that some wear and tear will eventually occur over time. This can include cracks and crevices in the toilet base, where moisture can easily seep into the structure of your toilet.

While this may not seem like a major problem, it’s actually important to caulk around the base of your toilet in order to protect against leaks and water damage. Caulking also helps keep your bathroom looking clean and tidy by preventing unsightly mold and mildew from forming.

How To Caulk A Toilet

Let’s take a deep dive into how to caulk around the toilet.

1. Remove Old Caulk

Photo by The Spruce

Firstly, you’ll need to remove any old or damaged caulk from around the base of your toilet. This can be done using a sharp scraper or utility knife, as well as some elbow grease and a bit of muscle.

After carefully removing all traces of caulk from around your toilet base, make sure to thoroughly clean and dry the area before moving on.

2. Apply Painter’s Tape

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Once your surface is clean and dry, you can begin applying painter’s tape around the base of your toilet. This will help to create a clean, straight line while you are caulking and also prevent any accidental spills or smudges as you work. If you caulk quite often, you can skip this part.

3. Set Up Caulk Gun

Next, you will need to set up your caulking gun so that it is ready for use. This typically involves attaching a tube of caulk to the back of your gun and ensuring that the trigger is properly primed to release the caulking material.

Once you have your caulking gun set up, test it out by applying a small amount of caulk to your painter’s tape. If the caulk comes out in a smooth, even line, you are ready to begin your caulk job around the toilet base. If not, double-check that your caulking gun is properly primed and ready to go.

4. Apply Caulk

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Now it’s time to begin applying the caulk around your toilet base.

Start by carefully following along the edge of your painter’s tape, making sure to keep a steady, even pressure on the caulking gun. Hold your caulk gun at a 45-degree angle and slowly move it around the toilet while engaging the trigger. You may need to make a few passes around the base of your toilet to completely fill in any gaps or cracks.

While you’re working with caulk, you generally want to pull the caulk gun towards you as you work rather than push it away from you. This helps create a more consistent and even bead of caulk. Once you have finished applying caulk to your entire toilet base, allow it to dry completely before removing the painter’s tape and inspecting your work.

5. Smooth Caulk

If you notice any areas where your caulk may not be as smooth and even as you would like, don’t worry – there is an easy fix. Simply take a damp rag and gently smooth out the caulk until it is perfectly even, then allow time for your caulking work to dry completely before moving on.

Frequently Asked Questions

What happens if you don’t caulk around the toilet?

If you don’t caulk around your toilet, water and moisture can seep into the structure of your toilet over time. This would then become a breeding ground for mold and mildew, which can lead to damage to your bathroom and other problems.

How long does it take silicone to dry around a toilet?

Typically, it takes between 30-60 minutes for silicone caulk to completely dry around a toilet. To ensure you get the best results and avoid any smudging or damage to your new caulking job, do not touch or disturb the area until it is entirely dry to the touch.

How long after caulking can you use the toilet?

It is generally recommended to wait at least 24 hours after caulking around a toilet before using it again. This will give the caulk time to fully set and dry, reducing the risk of damage or unwanted movement of your toilet over time.​

Will caulking a toilet keep it from rocking?

Caulking a toilet can help to keep it from rocking or moving over time. By filling in any gaps or cracks around the base of the toilet, the caulk will help to create a secure and stable foundation for your toilet to sit on.

This can help prevent it from moving or shifting over time, reducing the risk of damage or other unwanted issues.​


Whether you are repairing an old, damaged toilet or simply maintaining your bathroom fixtures, knowing how to properly caulk around the toilet base can be an essential skill.

With just a few simple steps and some supplies from your local hardware store, you can master the art of caulking around the toilet base and keep your bathroom looking clean and well-maintained all year round!​

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