How To Get Rid Of Mold On Bathtub

How to Get Rid of Black Mold in Your Shower Caulking

How To Get Rid Of Mold On Bathtub

Have you noticed black mold growing in the caulk of your shower? It’s not only unsightly, but it can also be harmful to your health. Black mold can cause respiratory problems and allergies, and it can be difficult to get rid of once it takes hold. In this article, we will discuss how to get rid of black mold in your shower caulk and prevent it from coming back.

What Causes Black Mold in Shower Caulk?

Black mold thrives in warm, moist environments, making your shower the perfect breeding ground. The caulk around your shower provides the perfect environment for mold to grow. It can hide in the small crevices and pores of the caulk, making it difficult to remove once it establishes a foothold. Other causes of mold growth in shower caulk can include:

  • Leaky showerhead or faucet
  • Poor ventilation
  • High humidity in the bathroom
  • Not drying the shower after use

How to Remove Black Mold from Shower Caulk

woman removing moldy caulk

Before you start the removal process, make sure you have all the necessary tools and supplies:

  • Gloves
  • Face mask
  • Bleach or white vinegar
  • Baking soda
  • Scrub brush or toothbrush
  • Razor blade or putty knife
  • Caulk remover
  • Caulk gun
  • New caulk

Step 1: Protect Yourself

Mold spores can be harmful to your health, so it’s important to protect yourself. Wear gloves and a face mask to prevent inhaling the spores.

Step 2: Remove the Old Caulk

Use a razor blade or putty knife to carefully remove the old caulk. Be careful not to damage the surrounding tiles or tub. If the mold is severe, you may need to use a caulk remover to soften the caulk before removing it.

Step 3: Clean the Area

Use a scrub brush or toothbrush to clean the area with either bleach or white vinegar. If you choose to use bleach, make sure to dilute it properly. Let the bleach or vinegar sit for about 10 minutes before rinsing it off with water.

Step 4: Dry the Area

Use a clean towel to dry the area thoroughly. Mold thrives in moist environments, so it’s important to make sure the area is completely dry before proceeding.

Step 5: Apply Baking Soda

Sprinkle baking soda over the area and let it sit for about 10 minutes. Baking soda is a natural fungicide and will help kill any remaining mold spores.

Step 6: Apply New Caulk

Apply a new bead of caulk using a caulk gun. Smooth the caulk out with your finger or a caulk smoothing tool. Make sure to press the caulk firmly into place and let it dry completely.

Step 7: Prevent Future Mold Growth

Reduce Moisture in the Bathroom

Mold thrives in moist environments, so it’s important to reduce moisture as much as possible. Use a vent fan or open a window to provide proper ventilation in the bathroom. Make sure to dry the shower after each use, and fix any leaks or drips to prevent water from pooling in the caulk.

Use Mold-Resistant Caulk

When choosing a caulk for your shower, look for one that is mold-resistant. These caulks are designed to inhibit the growth of mold and mildew.

Regularly Clean the Shower

Mold is less likely to grow in a clean environment. Make sure to regularly clean the shower with a mold and mildew cleaner to prevent the growth of mold.


How can I tell if the mold in my shower caulk is black mold?

The only way to definitively determine if the mold is black mold is to have it tested by a professional. However, if the mold is black and slimy and is growing in a damp area, it’s likely black mold.

Can I use bleach to remove black mold from my shower caulk?

Yes, bleach is an effective way to kill black mold. However, make sure to dilute it properly and wear gloves and a face mask to protect yourself.

Can I use vinegar to remove black mold from my shower caulk?

Yes, vinegar is also an effective way to kill black mold. It’s also non-toxic and safe to use.

Can I prevent mold growth in my shower caulk?

Yes, by reducing moisture in the bathroom, using mold-resistant caulk, and regularly cleaning the shower, you can prevent mold growth in your shower caulk.


Black mold in shower caulk can be a health hazard and difficult to remove once it takes hold. By following the steps outlined in this article, you can safely and effectively remove black mold from your shower caulk and prevent it from coming back. Be sure to take preventative measures to reduce moisture in the bathroom, use mold-resistant caulk, and regularly clean the shower to prevent mold growth in the future.

Step Action
1 Protect Yourself
2 Remove the Old Caulk
3 Clean the Area
4 Dry the Area
5 Apply Baking Soda
6 Apply New Caulk
7 Prevent Future Mold Growth