How to Caulk a 3 Piece Shower

How to Caulk a 3 Piece Shower in 11 Easy Steps

Caulking is an absolutely vital step in shower installation, but it can be hard to know how to do it properly. 

The process of how to caulk a 3 piece shower can seem daunting and complicated, but we’re here to help! We’ll walk you through the steps involved in this process so that you can get started on your project with confidence.

This article will give you all the information about what tools and materials are needed for caulking a 3 piece shower as well as how to go about doing it. 

An Explanation of How to Caulk a 3 Piece Shower

1. Get Rid of the Old Caulk If There is Any

The first step is always to remove all the old caulk before applying the new caulking. 

This can often be very difficult and may require some work with a putty knife, but it needs to be done before caulking your shower. Use a putty knife or any caulk remover tool to cut through any hard spots of residue left behind by old caulk.

2. Apply a Damp Rag

Use a damp rag to wipe the area clean. There should not be any residue of old caulk or even soap scum left behind before applying the new caulking. You want a clean and smooth surface for your new caulk to adhere to.

3. Make Sure the Area is Dry

After you have wiped the surface with a damp rag, make sure that you let it completely dry before applying the caulk. 

Applying caulk to a wet surface will not work and will likely lead to a mess of product on your floor or shower wall panel.

4. Make Sure the Surface is Clean

If you’re caulking a 3 piece of the shower stall, it may not be as easy to clean the area. The inside of your shower or tub is usually hard to reach and clean.

It’s important for your caulk to be applied in an area that has been properly cleaned so that you can avoid any problems with mold growing behind the caulk once it dries

5. Use Masking or Painters tape

You can use painters or masking tape to carefully seal off the area you don’t want caulk getting into.

This type of adhesive tape will help you to avoid having to clean caulk off of the shower pan, bathtub, or any other surface surrounding your new 3 piece installation.

It’s important for your caulking material to only go where you want it so that the final product looks professional and appealing.

Related Article: What’s the difference between caulk strip and caulk?

using masking tape

6. Caulk Gun Selection

You’ll want to use a high-quality caulk gun for applying your new caulking.

A cheap product usually means that the caulk gun will be flimsy and weak. A good caulk gun should have a solid grip and be able to push out enough caulk in a short period of time.

When choosing a caulk gun, look for one with a wide opening. This will make it much easier to get your caulking out of the tube and into place quickly.

It’s important to never apply too much pressure when using a caulking gun because this could result in unwanted messes or having your material squirt out in odd places. 

7. Use Silicone based Caulk

Make sure you use a high-quality silicone caulk that is approved for application in bathrooms.

Silicone caulk made specifically for bathrooms will last longer and offer the most protection from water damage, mold build-up, and other problems associated with moisture.

You can also use latex caulk or acrylic caulk combined with silicone but be sure to read the label of your product carefully before applying it so that you don’t accidentally buy one intended for outside use.

Silicone caulk is easier to work with than latex or acrylic products because of its ability to stick to surfaces, but it can be more expensive.

8. Apply the Caulk

You can apply your caulk in one of two ways.

The first way is to work it into place by hand using a plastic trowel. The other option is to use the caulking gun to apply the product quickly. Be sure to cut the caulk tube with a utility knife by 45 degrees.

Using an applicator like a trowel or even your finger will give you more control over how much material you are putting down, but taking the time to use the gun may be faster and easier for some people.

It’s important to not apply too much pressure if you use a trowel so that you don’t end up with blobs of caulk on your shower base or other surfaces around your 3 piece installation.

9. Smooth Out The Caulk

When using a trowel, you’ll want to smooth out the caulk as it goes down. A plastic trowel is a great tool for this because of its ability to spread out the caulk while working it into the seams.

A metal trowel will likely leave behind streaks or lumps that can make your final product look messy and unprofessional.

10. Remove Any Excess Caulk

You should have some wet paper towels or cloth nearby when you are working with your caulk.

Whenever you encounter any excess product, it’s important to wipe it away quickly before it dries up and becomes hard to remove.

You can use your hand to smooth any rough edges after the product has dried, but make sure that you do not touch the area until it has had enough time to dry completely.

11. Let The Caulking Dry

Before using your shower or bath tub surround again, make sure you allow the caulk to dry in a well-ventilated area.

It’s important for your caulking material to completely dry in order to prevent water damage in the future and avoid creating an environment where mold can grow.

You should wait at least 24 hours before removing any masking paper from the areas around your installation so that it has enough time to get hard and ready for use.

The Benefits of Caulking a 3-Piece Shower

  • Caulking is a great way to ensure that your 3 piece installation looks neat and professional even years after you first install it.
  • When done correctly, caulking can help reduce the amount of moisture in the area of shower surround while adding an extra layer of protection against mold or other common bathroom problems.
  • Manufacturers of 3 piece showers will not include caulking with your purchase, but it’s something that you should consider whether you are buying a new shower or updating an existing one.
  • Caulking is inexpensive and easy to apply, so it can help protect your bathroom while improving its overall appearance at the same time.
  • Caulking your 3 piece shower can help complete the overall appearance of your bathroom after you install it for the first time.  If you are looking to update or replace an existing install, adding new caulking may also improve its look and function over time.
  • Even if you only do the job once, you will be glad that you took the extra step in order to ensure that your 3 piece installation looks great every time someone uses it.
  • When done right, applying caulk around a three-piece shower door is both quick and easy and helps the 3-piece system look as though it was designed with your bathroom in mind.


Q. What are the benefits of caulking a 3-piece shower?

A. Caulking your 3 piece shower panels should be done for both practical and aesthetic reasons since it helps protect your bathroom walls while also making your installation look more attractive.

Q. Where do I get caulk for my three-piece installation?

A. You can purchase caulking material at almost any online store or local hardware store in order to complete your 3-piece installation correctly.

Q. How much caulk will I need to install a 3-piece bathtub?

A. It depends mainly on how large the gaps are between each section of the system you have chosen to use, but one caulk tube should be sufficient if you keep it neat while applying it.

Q. What is a good way to apply caulk around a 3-piece shower?

A. A plastic trowel should be used to smooth out the caulk while working it into gaps, and you should avoid using a metal trowel since it may leave behind visible streaks or lumps.

Last Thoughts

Using caulk around a 3-piece shower can help protect your bathroom from damage and could even make it easier to clean in the future.

When done right, a 3-piece installation will last for several years before needing any repairs or updates, and adding caulk make those repairs less expensive as well as more time-consuming.

We hope that this article about How to Caulk a 3 Piece Shower has been useful and will guide you in your installation.

Please, feel free to leave a comment with any questions or concerns that you may have and we’ll answer them as soon as possible. You can also check out all of our other articles. Thanks for reading!

You Might be Interested:

Leave a Comment

Your email address will not be published. Required fields are marked *