How To Remove Mould From Silicone

Mould growth on silicone in your shower is a common issue that can turn your bathroom into an unhealthy environment. Addressing black mould on silicone sealant promptly is crucial to maintaining your home’s appearance and hygiene. 

In this guide, we’ll explore how to remove mould from silicone, helping you achieve a spotless and safe bathroom space.

Why does mould get in silicone?

Mould thrives in warm, damp environments, making bathrooms a prime location for its growth. Silicone sealant, commonly used around showers, bathtubs and sinks, provides an ideal surface for mould for several reasons:

• Moisture retention — Silicone is designed to be waterproof, but it can still retain moisture on its surface, especially if water frequently splashes onto it. This constant dampness creates a perfect breeding ground for mould spores.

• Organic matter — Over time, soap scum, body oils and other organic materials can accumulate on silicone surfaces. These substances provide nutrients that mould needs to grow.

• Poor ventilation — Bathrooms often have limited ventilation, which keeps humidity levels high. Mould can easily take hold of silicone and other damp surfaces without proper air circulation to dry out the area.

• Infrequent cleaning — Regular cleaning is essential to prevent mould growth. If silicone areas are not cleaned often, mould spores have the opportunity to settle and multiply.

• Compromised sealant — Old or damaged silicone sealant can develop cracks and gaps, trapping moisture and providing an even better environment for mould growth.

Tools and materials to get mould out of silicone

• Protective gloves and mask
• White vinegar
• Baking soda
• Bleach
• An old toothbrush or scrubbing brush
• Microfibre cloths
• A spray bottle
• A utility knife or razor blade

How to remove black mould from silicone sealant

1. Prepare the area — Start by ensuring the bathroom is well-ventilated. Open windows and doors to allow fresh air to circulate. Put on your protective gloves and mask to avoid inhaling mould spores or coming into contact with harsh cleaning agents.
   
   
2. Start with initial cleaning — Wipe down the affected silicone with a damp microfiber cloth to remove surface dirt and grime. This step helps expose the mould, making it easier to treat.
   
   
3. Apply white vinegar — Fill a spray bottle with white vinegar and generously spray it onto the mouldy silicone. Vinegar is a natural shower mould remover and works effectively on most mould types. Let the vinegar sit for at least 30 minutes to penetrate and kill the mould spores.
   
   
4. Scrub with baking soda — After the vinegar has had time to work, sprinkle baking soda directly onto the silicone. Use an old toothbrush or scrubbing brush to scrub the silicone sealant thoroughly. The abrasive nature of baking soda helps to dislodge mould from the silicone surface.
   
   
5. Rinse and dry — Rinse the area with warm water and wipe it down with a clean microfibre cloth. Make sure to dry the silicone completely, as moisture can quickly lead to mould regrowth.
   
   
6. Use bleach for stubborn mould — For stubborn mould that doesn’t respond to vinegar and baking soda, bleach is an effective alternative. Mix one part bleach with four parts water in a spray bottle. Spray the solution onto the mouldy silicone and let it sit for 10–15 minutes. Scrub the area again with a brush, then rinse and dry thoroughly.

Preventative measures: keeping mould out of silicone

• Ensure ventilation — Use exhaust fans or open windows to reduce humidity levels. Proper ventilation helps to quickly dry out moisture after showers and baths.

• Wipe down shower surfaces — After each use, wipe down surfaces, including silicone sealants, to remove excess moisture. This practice minimises the amount of water left to evaporate, reducing the chance of mould growth.

• Use a mould-resistant silicone sealant — Consider replacing old silicone with a mould-resistant sealant. These products are designed to inhibit mould growth, providing better long-term protection.

• Clean regularly — Establish a regular cleaning routine using a mild bathroom cleaner or a vinegar solution to keep surfaces free from soap scum and other organic materials that can feed mould.

• Fix leaks promptly — Any leaks in your shower, bathtub or sink should be fixed immediately to prevent water from accumulating and creating a hospitable environment for mould.

• Use a squeegee — Keep a squeegee in your shower and use it to remove water from walls and doors after each use. This simple tool can significantly reduce the amount of moisture left behind.

• Install a dehumidifier — In bathrooms that suffer from persistent humidity, a dehumidifier can help maintain lower moisture levels in the air, further preventing mould growth.

• Avoid overcrowding — Ensure your shower area is not cluttered with too many bottles and accessories. These items can trap moisture and provide additional surfaces for mould growth.

• Seal cracks and gaps — Regularly inspect the silicone sealant for signs of wear, cracks or gaps. Reseal any damaged areas promptly to prevent moisture from getting trapped.

Remove mould with Jim’s Cleaning

Mould in shower silicone is a common issue that can be effectively managed with the right approach and materials. By following the steps above, you can restore the cleanliness and hygiene of your bathroom, ensuring a safe environment for you and your family. 

However, if shower silicone mould continues to be a problem despite your best efforts, it may be time to seek professional cleaning services. Professional cleaners have the tools and expertise to tackle severe mould infestations, ensuring a thorough and long-lasting solution.

For reliable and efficient home cleaning services, including mould removal, consider Jim’s Cleaning. Request a free quote today to get started.