How to Remove Mold Spots on Caulk

Bathtub caulking is prone to mold and mildew.

Caulking is usually necessary in areas of your home that are prone to moisture. For example, bathtubs are usually chock-full of caulk, as are kitchen sinks and some windows. Because mold thrives in warm, humid climates, caulk is highly susceptible to accumulating the green stuff. Fortunately, removing mold from caulk can be done quickly and without spending loads of cash. The key is to be thorough, as this prevents mold from coming back.

Things You'll Need

• Vinegar
• Baking soda
• Small bowl
• Toothbrush
• Rag
• Bleach
• Spray bottle

Instructions

1. Combine one part vinegar and one part baking soda in a small bowl. Stir the ingredients to create a paste.

2. Apply a layer of the vinegar paste to the caulk mold spots. Use enough of the solution to coat the surface completely.

3. Use a toothbrush or bristle brush to scrub the surface. Scrub in a circular motion to break up the mold and continue scrubbing until all traces of the caulk mold are gone.

4. Rinse the surface with water and pat dry with a clean rag.

5. Combine one part water and one part bleach in a spray bottle. Spray the caulk to kill any residual mold (some of which may not be visible). Allow the bleach water to air dry.

6. Repeat the process again to ensure the mold is completely removed.

Tips & Warnings

• Use a fan or dehumidifier in the space to prevent the mold from coming back.

• If mold persists, remove the existing caulk and replace it.

References

• Every Fact About Mold Removal: Remove Mold From Bathroom Caulk