Best Caulk for Toilet Base

Best Caulk for Toilet Base: Top 5 Picks

You’ve just replaced your old toilet, and now you need to seal the base so it doesn’t leak. Sealing the base of a toilet can be a difficult and messy task. If you don’t do it right, you could end up with water damage to your floor.

The best caulk for toilet base is an easy and mess-free way to seal the base of your new toilet. This caulk is designed specifically for this purpose and will create a watertight seal to prevent leaks. Plus, it’s easy to apply and clean up, so you won’t have to spend hours trying to get the perfect seal.

But how do you find the right one? We are here to help. Throughout this article, we will look at the different types of caulk for toilet bases and how to choose the right one for your needs.

What Is the Difference Between Silicone and Caulk?

There is a difference between silicone and caulk as sealants. The difference between caulk and silicone is its elasticity. Objects can expand and contract freely when silicone is used as a sealant. This makes it useful for areas that experience movement or changes in temperature, as the sealant will not crack or break.

This also means that silicone is not as strong as caulk and may need to be replaced more frequently. Caulk is less likely to stretch or break, but it is also less flexible overall. It is better suited for areas not subject to movement or temperature changes.

When applying either sealant, it is important to ensure that the surface is clean and dry before application. Both silicones and caulk can be applied using a caulking gun. Simply cut the tip of the tube at an angle to create a small hole, then insert the tube into the gun and squeeze the trigger to release the sealant.

Can I Just Silicone A Toilet to The Floor?

Before the use of silicone, plumbers would use putty to secure toilet pans to the floor. The big issue with putty is that it dries out over time, becomes hard, and cracks.

Once the putty cracks, water will start to seep out from under the toilet pan and cause all sorts of problems, including decay of the subfloor and potentially causing leaks into the ceiling below if the bathroom is located on an upper level.

With the advent of clear sanitary grade silicone, plumbers found a much better way to fix toilet pans to the floor. Clear silicone is extremely flexible and waterproof, making it ideal for bathroom use. It also doesn’t dry out or become hard over time, so it doesn’t need to be replaced as often as putty.

So, if you’re wondering whether you can just silicon a toilet to the floor, the answer is yes. Clear silicone is the best way to attach a toilet pan to the floor and has become the standard method used by plumbers.

Reviews Of The 5 Best Caulk for Toilet Base

Caulking is an important part of any toilet installation. It helps to create a watertight seal around the toilet’s base, preventing leaks and damage to the surrounding area. There are many types of caulk on the market, and it cannot be easy to know which is right for your project.

To help you decide, we have compiled a list of the five best caulks for toilet bases, along with a brief overview of each product. We hope this information will help you choose the best caulk around toilet base:

1. Gorilla Silicone Sealant Caulk

Key Features:

  • 30-minute water ready
  • 100% waterproof
  • Mold/mildew resistant
  • Clear and white color
  • Indoor and outdoor use

About This Product:

The Gorilla silicone sealant caulk is perfect for a variety of surfaces, both indoor and outdoor. This sealant is waterproof, mold and mildew-resistant, and will not yellow, shrink, or crack. It is available in white or clear, making it the perfect choice for various applications.

Plus, this sealant is ready for water in as little as 30 minutes, making it a great choice for any project. This caulk will do the job right, whether sealing a kitchen countertop, bathroom vanity, window frame, door threshold, plumbing fixture, or gutter.

Why Do You Need It?

Caulk is used to seal gaps and cracks, preventing water, air, and moisture from passing through. It can be used indoors or outdoors and is great for areas that are exposed to weathering, like gutters and windows.

Gorilla sealant is 100% waterproof, mold and mildew-resistant, and won’t yellow, shrink or crack over time. It is also paintable, making it ideal for areas that need to be sealed and protected from the elements.


  • Seals out water, air, and moisture
  • Won’t yellow, shrink, or crack
  • Great for a variety of applications


  • Extreme temperatures or direct sunlight may not be suitable

2. Gorilla White Silicone Caulk

Key Features:

  • 100% waterproof
  • Ready in 30 minutes
  • Cartridge gun useable
  • Won’t be yellowing
  • white color and paintable

About This Product:

Gorilla white silicone caulk is a 100% silicone sealant that is great for kitchen, bath, window, doors, auto, marine plumbing, gutters, and more. This silicone caulk is waterproof, ready for water exposure in just 30 minutes, and mold & mildew resistant.

This silicone caulk is non-yellowing, non-shrinking, and non-cracking. In addition to being silicone, Gorilla white caulk is also paintable. For gaps larger than ½ inch, use the backer rod. Apply at a temperature above 40°F (5°C).

Why Do You Need It?

Silicone caulk from Gorilla is great for various applications, including kitchen, bath, window, door, and marine plumbing. It seals water, air, and moisture and is resistant to mold and mildew. This silicone sealant is non-yellowing, shrinking or cracking.

Plus, it’s water-resistant after only 30 minutes. So whether you’re caulking a toilet base or using it on general auto/marine applications, don’t forget your Gorilla 8060810 silicone sealant.


  • Seals out water, air, and moisture
  • Resistant to mold and mildew
  • Won’t yellow, shrink, or crack over time
  • Water-resistant in 30 minutes


  • Wet, damp, frozen, or contaminated surfaces shouldn’t be used

3. Red Devil Siliconized Acrylic Caulk

Key Features:

  • Watertight seal
  • Discoloration resistance
  • Excellent adhesion
  • Easy to apply
  • Water clean up

About This Product:

Red Devil siliconized acrylic caulk is a great product to use for repairing kitchen and bathroom fixtures. The caulk is water resistant, making it a good choice for areas that may be exposed to moisture.

It also has excellent adhesion so that it will stick well to most surfaces. Application and tooling are both easy, making it possible to achieve a professional-looking repair. The caulk can be painted any color you want, and it is easy to clean up with soap and water.

Why Do You Need It?

Bathrooms and kitchens are two of the most commonly used rooms in any home, so it’s important to ensure they’re well-sealed against water damage. Caulking is a key part of that seal, and Red Devil caulk is an excellent choice for the job.

This siliconized acrylic caulk provides a durable, watertight seal that can resist discoloration over time. It sticks well to a wide range of kitchen and bathroom surfaces. Its advanced formula can also match any color. Plus, it’s easy to apply and a tool, making it a great option for anyone looking for professional results.


  • Durable & watertight seal
  • Paintable & easy to apply
  • Flexible & long-lasting
  • Dries to an ultra-smooth


  • May not adhere to all surfaces equally well

4. GE Advanced Silicone 2 Kitchen & Bath Sealant Caulk

Key Features:

  • 100% waterproof
  • Moisture resistant
  • Strong and flexible
  • 30-minute water-ready
  • Shrink and crack-proof

About This Product:

The GE advanced silicone 2 kitchen & bath sealant caulk is a great product to use when caulking around your toilet. This 100% silicone formula provides reliable seals in areas that are exposed to water regularly, providing maximum protection.

This sealant is also moisture-resistant, so it’s ideal for exterior projects. Additionally, it’s strong and flexible and can withstand temperature fluctuations that cause extreme expansion and contraction.

Why Do You Need It?

When you have a lot of water exposure in your bathroom, it’s important to have a reliable sealant to keep everything dry. GE advanced GE5040 sealant is perfect for areas like tubs, showers, and sinks that see a lot of water action.

You can trust that this sealant will keep everything dry since it is 100% waterproof. Even if there is a lot of moisture in the air, the cured sealant is resistant to staining. Plus, it’s flexible and shrink-proof to handle any temperature fluctuations.


  • Waterproof provides reliable protection
  • A durable seal that’s moisture resistant
  • In 30 minutes, it’s ready for the water
  • It’s flexible and durable and stays flexible forever


  • It can be difficult to apply it neatly without the proper tool

5. GE Supreme Silicone Caulk

Key Features:

  • 100% silicone caulk
  • Waterproof caulk
  • Paintable caulk
  • White color
  • It is made in the USA

About This Product:

The GE supreme silicone caulk is a great option for caulking around toilets. The silicone caulk is durable and waterproof, making it a great choice for areas that may come into contact with water. 

This caulk is also easy to use, with a simple applicator that makes it easy to get the right amount of caulk where you need it. Plus, the caulk is white so it will blend in with most toilet fixtures.

Why Do You Need It?

If you’re noticing water on your floor around the base of your toilet, it’s time to get some waterproofing protection. Caulking is an easy and effective way to do this. 

GE M90011 water-ready caulk is a great option because it’s durable and can withstand exposure to water just 30 minutes after application.


  • You can apply it in wet environments, and it still works
  • It is durable and will last a long time
  • You can paint it to match your toilet


  • You might have a hard time applying it

These all seem like great options for caulking around toilets. But which one should you choose?

How To Choose the Best Caulk for A Toilet Base?

How To Choose the Best Caulk for Toilet Base

Choosing the right caulk for a toilet base is important to ensure a proper, watertight seal. Here are a few things to keep in mind when making your selection:

Type of Caulk

Different types of caulk can be used for the toilet base. The type of caulk will depend on the surface it will be applied to and the environment in which it will be used.

For example, if the caulk is applied to a porous surface, then a water-based caulk should be used. If the caulk is used in a wet environment, then acrylic caulk should be used. Caulk should be used in a dry environment, then a siliconized latex caulk should be used.

If the caulk is exposed to sunlight, then an ultraviolet (UV) resistant caulk should be used. Before purchasing a caulk, it is important to determine what type is needed for the job.

The Color of Caulk

The toilet base is typically white, so white caulk is usually the best choice. If you have a colored toilet or a brightly colored bathroom, you may want to choose a colored caulk that complements the decor.

Silicone white color caulk is more durable and waterproof, but it can be more difficult to work with. Latex caulk is easier to use but not as durable. So, it is important to consider both the ease of use and the durability when selecting the best sealant for toilet base.

How Easy It Is to Apply

You need to choose a caulk that is easy to apply. Here are a few tips to help you determine how easy it is to apply the best silicone caulk for toilet base:

  • Check the consistency of the caulk. If it’s too thick or too thin, it won’t be easy to apply evenly. You want a caulk that has a smooth, creamy consistency.
  • Read the instructions on the label. This may seem like a no-brainer, but it’s important to ensure you understand how much caulk you need for your project and how long it will take to set.
  • Test the caulk on a scrap piece of material. This will give you a chance to get a feel for how the caulk flows and how easy it is to control.

Weather and Waterproof

You need to consider two things when determining whether a caulk is weatherproof and waterproof: the ingredients used to make the caulk and the application method. Most caulks are made of either latex or silicone.

Latex caulks are cheaper and easier to apply, but they’re not as durable or long-lasting as silicone caulks. Silicone caulks are more expensive, but they’re also more flexible and resistant to weather and water.

Weatherproof and waterproof caulks are an essential part of any bathroom renovation, so be sure to choose the best caulking for toilet base for your needs.

Temperature Rating

The temperature rating is one of the most important factors to consider when purchasing caulk for your toilet base. The vast majority of caulks are rated for temperatures between -30 and 180 degrees Fahrenheit. If your bathroom is particularly warm or cold, you may need a caulk with a different temperature rating.

For example, if your bathroom is in a hot climate, you’ll want to look for a caulk that can withstand temperatures up to 200 degrees Fahrenheit. Conversely, if your bathroom is in a cold climate, you’ll want to choose the best caulk for base of toilet that can withstand temperatures as low as -40 degrees Fahrenheit.

Paintable and Flexible

Before you buy a new caulk for your toilet base, it’s important to know how to determine whether it is paintable and flexible. The two main things you’ll want to look for are the ingredients list and the expiration date.

Most caulk is made with acrylic or silicone, and either of these ingredients will usually be listed on the front of the package. Acrylic caulk is more affordable but doesn’t last as long as silicone caulk. Silicone caulk is more expensive, but it is also more durable and can be painted over once it dries.

You’ll also want to check the expiration date before purchasing the caulk, which can affect its performance. Once you’ve determined that the caulk is paintable and flexible, you can apply it to your toilet base.

Crack and Shrink Proof

One important factor to consider when purchasing caulk is its level of Flexibility. If the caulk is too brittle, it may crack under pressure or during temperature changes. On the other hand, if the caulk is too flexible, it may shrink over time, leaving gaps that allow water to seep through.

To strike the perfect balance, look for a caulk that is specifically labeled as “crack and shrink proof.” This caulk is designed to retain its shape and size over time, making it an ideal choice for sealing around toilets and other fixtures

Another factor to consider is the cure time. Some types of caulk take longer to cure than others. If you need to use the toilet right away, opt for a rapid-curing caulk so that you can get back to your daily routine as soon as possible.

Discoloration Resistance

When selecting a caulk for your toilet base, you will want to consider its discoloration resistance. Many caulks are susceptible to staining, yellowing, or darkening over time, especially in high-moisture areas like bathrooms.

To avoid an unsightly caulk line, look for a product specifically labeled discoloration resistant. These products typically use special pigments or additives that help to prevent staining. In addition, you may want to choose the best silicone sealant for toilet with a light color, such as white or light gray.

Darker colors are more likely to show signs of discoloration over time. With a little careful selection, you can ensure that your caulk will stay clean and fresh for years to come.

Will Caulking a Toilet Stop the Sewer Smell?

Regarding preventing sewer smells, caulking around the base of your toilet is a must. Without caulking, bacteria can form and create an unpleasant odor. In addition, water and urine can seep under your toilet, causing further damage.

Caulking creates a protective barrier that helps keep bacteria and water at bay. In addition, it helps to prevent bad odors from permeating your bathroom. When applied correctly, caulking can be a powerful tool in the fight against sewer smells.

What Causes Water Leaks Around the Base of The Toilet?

Best Caulk Around Toilet Base

There are a few potential causes of water leaks around the toilet’s base. One possibility is that the caulk has become cracked or ineffective. Over time, caulk can degrade due to exposure to water, cleaning chemicals, and other factors. As a result, it may no longer form a tight seal around the toilet base.

Another possibility is that the tee bolts have become loose. These bolts are responsible for holding the toilet in place, and if they become loose, the toilet will likely rock. This can cause the wax ring seal to break, allowing water to escape each time you flush.

If you suspect that your caulk needs to be replaced or your tee bolts are loose, it’s best to contact a plumber for assistance. Otherwise, you may end up with extensive water damage in your bathroom.

How Do You Caulk the Base of a Toilet?

There are a few steps involved in caulking the base of a toilet:

1. Remove the Old Caulk: The first step is removing the old caulk from around the toilet’s base. You can do this with a putty knife or a razor blade. Be sure to get the old caulk off so that the new caulk will adhere properly.

2. Clean the Surface: Once the old caulk is removed, you will need to clean the surface so it will adhere properly to the surface. You can do this with a household cleaner and a rag. Be sure to rinse the area well and let it dry completely before proceeding.

3. Apply New Caulk: Now you are ready to apply the new caulk. You can do this with a caulking gun or a tube of caulk. Be sure to follow the manufacturer’s instructions for the best results.

4. Smooth the Caulk: Once you have applied the new caulk, you will need to smooth it out, so it is flush with the surface. You can do this with your finger or a putty knife. Be sure to wipe away any excess caulk, so it does not harden on the surface.

5. Let It Dry: After you have smoothed out the caulk, you will need to let it dry for at least 24 hours before using the toilet or exposing it to water. This will allow the caulk to be set properly and create a seal that will last many years.

6. Enjoy Your New Toilet: Once the caulk has dried, you can enjoy your new toilet! Be sure to keep it clean so it will continue to look its best for years to come.

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Why Is the Caulk Around My Toilet Turning Brown?

Caulk is typically used when two surfaces combine to create a water-tight seal. For example, caulk is often used around the toilet’s base to prevent water from leaking onto the floor.

When caulk starts to turn brown, it usually indicates that there is a problem with the seal. In most cases, the problem is a result of a leaking wax ring. The wax ring is located between the bottom of the toilet and the flange (the pipe that connects the toilet to the sewer line).

When the wax ring leaks, human waste can seep through the cracks and start to break down the caulk. As a result, it’s important to replace the wax ring as soon as possible to prevent further damage.

Do You Silicone or Caulk Around the Toilet?

There are a few things to consider if you’re wondering whether to caulk or silicone around your toilet.

Most building codes in the United States require caulking around toilet bases, so this may be your deciding factor. Silicone is also a good option and may offer some advantages.

Silicone has a longer lifespan than caulk and is more resistant to mold and mildew. It also adheres to porous and non-porous surfaces, creating a tight seal that will last for years.

When applying silicone, use a food-grade variety specifically designed for bathroom use. This will ensure that it is safe for contact with potable water lines.

Can You Caulk Over Caulk Around Toilet Base?

The answer is it depends. If the bottom layer of caulk is damaged or moldy, it’s best to remove it and replace it with a new bead of caulk. If the old caulk is clean, dry, and free of oil, you can effectively caulk over the caulk.

For the best adhesion, use a high-quality caulking gun and apply even pressure while dispensing the new caulk. And smooth the caulk with your finger immediately after applying it. When caulking over caulk, it’s also important to choose the right type of caulk

For example, if you’re caulking around a toilet base, you’ll want to use a silicone-based caulk that can withstand moisture. With proper preparation and care, caulking over caulk can be an effective way to create a seal around your toilet base.

How Do I Fill the Gap Between My Toilet Base and the Floor?

If you’re putting in a new toilet or just want to make your old one seals tighter, you may need to caulk the gap between the toilet’s base and the floor. This is a relatively easy job that anyone can do with just a few supplies from the hardware store.

First, make sure that the area is clean and dry. If there’s any old caulk or grime, use a utility knife or putty knife to scrape it. Next, apply caulk evenly around the toilet’s base. You can use your fingers or a small spatula to smooth it out.

Once it’s in place, clean your finger with a paper towel or rag. Let the caulk dry for 24 hours before using it.

Should You Caulk the Base of a New Toilet?

If you’re wondering whether or not you should caulk the base of your new toilet, the answer is most likely yes. Although it may not seem like an essential step, the caulk serves an important purpose: keeping your toilet secure to the floor and avoiding any chance of injury or malfunction.

This is especially important if you have young children who might try to climb on the toilet. Caulking also helps to prevent water damage by creating a watertight seal between the toilet and the floor.

When choosing the best caulk for toilet base, look for a product specifically designed for bathrooms. Apply a generous bead of caulk around the toilet’s base, and smooth it out with a wet finger for a professional finish. Allow the caulk to dry completely before using the toilet.

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