How to clean mould off bathroom sealant

Bathroom sealant seen better days? Here’s how to remove mould from silicone.

Updated 23 September 2023


AuthorBy Cleanipedia Team

Reading Time5 minutes

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Key steps to removing mould from silicon sealant

  • Rub a paste of white vinegar and baking soda into mouldy areas.

  • Scrub at heavy stains with a stiff-bristled brush or reapply the paste.

  • Rinse with a cold, wet sponge and dry with a microfibre cloth.

  • Spray any mould on bathroom sealant with bleach and water to kill mould spores.

  • Ventilate and clean your bathroom regularly to prevent mould growth.

Bathroom sealant can be a magnet for mould, especially if it's been left alone for a while. Thankfully, learning how to remove mould from bathroom sealant isn’t actually that difficult – our step-by-step guide will talk you through it and even offer tips on preventing it from coming back. And, if your mould isn’t confined to the sealant, you can try our tips on how to use mould removers in the bathroom and kitchen.

Some everyday ingredients can help you remove mould from silicone. Keep your home stocked with baking soda and white vinegar and always have a versatile cleaner to hand. Read more about cleaning with vinegar and the uses of bicarbonate of soda with Cleanipedia.

How to get rid of mould in shower silicone and bathroom sealant

Have your noticed black mould on the bath sealant in your bathroom? Learn how to clean mould off bathroom sealant and shower sealant in just 10 easy steps.

You’ll need the following items to get started:

  • White vinegar

  • Baking soda

  • Damp rag

  • Stiff-bristled brush

  • Wet sponge

  • Cool water

  • Bleach

Then, follow these steps:

  1. 1

    Create a paste using 1 cup of white vinegar and 2-3 tsp of baking soda.

  2. 2

    Use a damp rag to scoop out a small amount of the paste.

  3. 3

    Rub the paste over the sealant. Ensure there is a good, thick layer over the mould.

  4. 4

    Leave the paste to sit for 5 minutes.

  5. 5

    Use a stiff-bristled brush to scrub the paste away from the sealant.

  6. 6

    Use a clean, wet sponge to ‘rinse’ the sealant clean. Ensure you use cool water.

  7. 7

    If stains remain, repeat steps 4-6 until no mould remains.

  8. 8

    Kill any lingering mould spores with bleach and water. Spray a solution of 1-part bleach to 4-parts water liberally over the sealant and leave to evaporate.

  9. 9

    Rinse the area again with a sponge and cool water.

  10. 10

    Dry with a clean microfibre cloth or towel.

Now you know how to remove mould from shower sealant and silicon it’s time to stop it from coming back:

  • Wash your bath towels, shower curtain, and bathroom furnishings regularly to avoid giving mould a place to grow. It loves damp conditions.

  • Use a dehumidifier or open a window to remove lingering moisture from the air after showering.

  • Invest in humidity removing houseplants. Read our article about air purifying houseplants for more advice.

  • Ensure you keep on top of your bathroom cleaning. Check out our guide for how to clean bathroom grout and make it part of your regular cleaning routine.

Image of a clean bathroom

Steps on How to Replace Bathroom Silicone Sealant

Firstly, you need to gather all the tools you will need for the job. You should have a silicone sealant remover, a caulk gun, a silicone sealant, a utility knife, and a scraper. Once you have gathered all your tools, the first step is to remove the old silicone sealant. Start by using a scraper or utility knife to cut the old silicone at one end and carefully pulling it away from the wall. Repeat this process until you have removed all the old silicone.

Once you have removed the old silicone, the next step is to clean the area. Use a silicone sealant remover to clean all the corners. It is important to ensure that the area is completely dry before applying the new silicone sealant.

Now it is time to apply the new silicone sealant. Load the caulk gun with the silicone sealant and start at one end of the area you want to seal. Hold the caulk gun at an angle, pressing down the trigger and move the gun steadily along the area. This creates a smooth and even line of silicone sealant, leaving no gaps.

After you've applied the new silicone sealant, smooth it out with a silicone finishing tool, which is designed to give the sealant a uniform look. Hold the tool at an angle and slowly work it along the sealant, removing all the excess material. This will give your sealant a professional finish and prevent any water or debris from getting into gaps.

How to keep bathroom sealant clean?

Keeping bathroom sealant clean is essential for maintaining its appearance and preventing the growth of mould or mildew. Regular cleaning and maintenance can help prolong its lifespan. Start by wiping the sealant with a damp cloth after each shower or bath to remove any soap residue or water droplets.

Avoid using abrasive cleaners that can damage the sealant. For tougher stains or mildew, create a mixture of equal parts water and white vinegar, apply it to the sealant, and let it sit for a few minutes. Gently scrub with a soft brush or toothbrush and rinse thoroughly. Periodically inspect the sealant for any signs of damage or deterioration, and consider reapplying sealant if necessary.

So, in just ten easy steps you now know how to remove mould from silicone sealant! Plus, this guide uses everyday products from your home making it budget-friendly too.

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