How To Replace Shower & Bathtub Sealant

How To Replace Shower & Bathtub Sealant

May 7th 2024

Shower and bath silicone sealant is an essential component for maintaining a beautiful and durable bathroom. Sealant that is beginning to leak or fall apart is more than just ugly to look at. It can allow mold and mildew to grow, leading to expensive and time-consuming repairs.

Here’s our step-by-step guide for replacing silicone bathtub sealant. From choosing the right tools for the job to maintenance tips, we’re here to help make your project successful.

Which Sealant Is Right for The Job?

Finding the best silicone sealant for showers and baths can feel overwhelming, but it doesn’t need to be.

When selecting a sealant for a shower or bathtub, there are many factors to consider. Some of the most important are material compatibility, flexibility, and resistance to moisture and mildew.

Silicone sealants are popular for their durability and waterproof properties, ideal for high-moisture areas. This makes them a great option for sealing and repairing areas of the home that see a lot of moisture and frequent use. Bathtubs and showers are one of these areas.

Proper ventilation during application is crucial to ensure the sealant cures correctly and prevents mold growth. If there isn’t a fan in the bathroom already, consider opening a window or bringing in portable fans to ensure ventilation.

Thorough surface preparation, including cleaning and drying, ensures optimal adhesion and longevity of the sealant. After all, you want the sealant to stick to the surfaces, not dirt or dust that may be on them.

Tools and Materials Needed

To replace shower and bathtub sealant effectively, gather essential tools including a caulking gun, utility knife, and scraper. These are important for ensuring the thorough removal of old sealant and the effective application of new sealant.

Choose the appropriate sealant based on your needs, such as mildew-resistant or waterproof varieties. You may also want to ask your client if they prefer a specific color, as sealant color can affect the room’s aesthetics.

Prioritize safety with gloves and goggles. Ensure adequate ventilation to prevent exposure to fumes. If ventilation isn’t readily available, consider bringing portable fans to keep air moving. By investing in the right supplies, you can ensure the longevity and effectiveness of the shower or bathtub seal.


Preparation is key when replacing shower and bathtub sealant.

Start by removing the old sealant. You can make this process easier by softening it with a sealant remover or solvent before you begin scraping it up. Using a utility knife or scraper, carefully remove the old sealant to ensure a clean surface.

Thoroughly clean the area to remove any residue or debris. Inspect for mold or mildew growth, identifying any present on the surface or in cracks and corners. If you find mold or mildew, use a mixture of bleach and water to clean the affected areas. Make sure you have proper ventilation and safety precautions throughout this process. To prevent future growth, consider using a mold-resistant sealant and improving ventilation in the bathroom.

Once the old sealant is removed and all surfaces are clean and dry, you are ready to begin applying new sealant.

Applying New Sealant

Applying new sealant to a shower or bathtub is a critical step in the replacement process.

Begin by choosing the appropriate sealant for your needs, considering factors like moisture resistance and durability. If you need help finding the right sealant, call us at 812-824-8000 and our team will be happy to help.

Before application, prepare the sealant and caulking gun according to manufacturer instructions, ensuring proper consistency and functionality. When applying the sealant, employ techniques for smooth application. Some important techniques to start with include holding the caulking gun at a consistent angle and using steady pressure.

Ensure even coverage along the entire seam or joint to maximize effectiveness and aesthetics. After application, smooth and shape the sealant using a wet finger or a caulking tool for a professional finish.

Remove any excess sealant promptly to prevent mess and maintain a clean appearance. As the sealant cures, it will become more challenging to remove excess.

Drying and Curing

After applying the new sealant, allow adequate drying time based on the sealant’s instructions. Factors like temperature and humidity can affect drying time, so ensure proper ventilation for optimal results.

Once dry, test the sealant's completeness by gently touching it to ensure it's firm and no longer tacky. Avoid using the shower or bathtub until the sealant has had time to cure to prevent damage or disruption.

Proper drying and curing ensure the effectiveness and longevity of the sealant. This helps provide a watertight barrier for the shower or bathtub.

Maintenance Tips

Instruct your client to regularly inspect the sealant for signs of wear, cracks, or mold growth. They should clean the sealant with mild soap and water as needed to remove dirt and grime. This can preserve both its appearance and functionality.

As you work on other projects in the home, address any issues with seals promptly to prevent further damage or water leakage. This will help ensure the integrity of the shower or bathtub. You can prolong the lifespan of the sealant and maintain a watertight barrier by performing regular maintenance.

Refresh Bathrooms With Silicone Depot

Properly maintaining shower and bathtub sealant is about more than aesthetic preferences. Well-sealed and maintained baths and showers last longer, look better, and can increase overall property values.

The right tools, preparation, and application can help keep bathrooms clean, durable, and beautiful.

At Silicone Depot, we have everything you need to tackle sealant replacement confidently. Browse our wide selection of sealants or call us at 812-824-8000 for help finding the perfect product for your next project.