how to get rid of black mould on silicone sealant



1. Understanding the menace of black mould on silicone sealant

2. Step-by-step guide to removing black mould from silicone sealant

3. Preventive measures to keep black mould at bay

4. Alternative solutions for a mould-free silicone sealant

5. Professional help: When and why you may need it

Understanding the menace of black mould on silicone sealant

Black mould, commonly known as Stachybotrys chartarum, is a type of fungus that thrives in damp and poorly ventilated areas. It has a notorious reputation for causing not only aesthetic issues but also health problems. One common area where it often appears is on silicone sealants, such as those found around bathroom or kitchen fixtures. In this article, we will guide you on how to effectively get rid of black mould on silicone sealant. Additionally, we will discuss preventive measures to ensure a mould-free silicone sealant environment and explore other alternative solutions.

Step-by-step guide to removing black mould from silicone sealant

1. Safety first:

Before you begin the process, ensure you have adequate protection. Wear gloves, a face mask, and protective eyewear to prevent any potential health hazards associated with cleaning mould.

2. Scrubbing away mould:

Start by using a soft brush or an old toothbrush to scrub away visible mould. Gently scrub the surface of the silicone sealant to dislodge any loose mould spores. Make sure to reach all the corners and crevices where mould tends to accumulate.

3. Homemade cleaning solution:

Prepare a mixture by combining one part vinegar with one part water. Vinegar is an effective natural cleaner that helps inhibit the growth of mould. Avoid using bleach as it can damage the silicone sealant.

4. Applying the cleaning solution:

Dip a sponge or a cloth into the vinegar-water mixture and thoroughly saturate the affected silicone sealant. Let the solution sit for at least 15-20 minutes. This will allow the vinegar to penetrate and break down the mould.

5. Scrubbing with hydrogen peroxide:

After the vinegar solution has had time to work, rinse the sponge or cloth and apply hydrogen peroxide to the mould-infested areas. Hydrogen peroxide acts as a bleaching agent and helps eliminate any residual stains left by the mould. Scrub the silicone sealant gently yet firmly.

6. Rinse and dry:

Once you are satisfied with the cleaning, rinse the silicone sealant thoroughly with fresh water. Ensure all residue from the cleaning solution and mould is removed. Use a clean towel or paper towels to dry the sealant completely to prevent any further moisture accumulation.

Preventive measures to keep black mould at bay

1. Ventilation:

Proper ventilation plays a pivotal role in preventing black mould growth. Ensure that your bathroom or kitchen is well-ventilated by utilizing exhaust fans or opening windows after showering or cooking. Improved airflow discourages mould formation.

2. Reduce moisture:

Black mould thrives in damp environments, so it is crucial to keep moisture levels low. Wipe down wet surfaces, repair any leaks promptly, and use a dehumidifier if necessary. Regularly inspect your silicone sealants for signs of moisture accumulation.

3. Sealant maintenance:

Regularly clean and inspect silicone sealants for any signs of wear or damage. If cracks or gaps appear, promptly reseal them to prevent water from seeping in and creating a conducive environment for mould growth.

4. Anti-mould products:

Consider using anti-mould products designed specifically for silicone sealants. These products contain mould inhibitors that can be applied to the sealant surface to deter mould growth. Follow the manufacturer's instructions for usage guidelines.

Alternative solutions for a mould-free silicone sealant

While vinegar and hydrogen peroxide are effective in removing black mould, some alternative solutions can also help keep silicone sealants mould-free. These include using a mixture of baking soda and water, commercial mould removers, or natural anti-fungal sprays. Explore these alternative options and choose the one that suits your preference and the severity of the mould infestation.

Professional help: When and why you may need it

Despite your best efforts, mould growth can become stubborn, leading to severe damage to your silicone sealant or potential health hazards. In such cases, it is wise to seek professional help. Certified mould remediation specialists possess the expertise and experience to assess the situation, identify the underlying causes, and provide effective and long-term solutions. Professional assistance becomes particularly important in cases involving significant mould growth or when it reoccurs frequently despite preventive measures.

In conclusion, black mould on silicone sealant can be a persistent problem, but with the right tools and knowledge, it can be effectively dealt with. Regular cleaning, proper maintenance, and preventive measures are key to keeping your silicone sealant mould-free. Stay vigilant, take necessary precautions, and enjoy a cleaner and healthier environment!


Just tell us your requirements, we can do more than you can imagine.
Send your inquiry

Send your inquiry

Choose a different language
Current language:English