How Do I Remove Mould From Bathroom Sealant?

How Do I Remove Mould From Bathroom Sealant?

Black mould in your bathroom can be a regular occurrence, but not treating it can have bad effects on your health. Not only is mould unsightly and possibly smelly, it can cause respiratory problems and can be very damaging to people suffering from asthma and similar health problems.

It is very important to clean rooms such as bathrooms and kitchens that are prone to mould, mildew and grime to keep your house looking great, as well as looking after your general health and well-being.

What Causes Black Mould to Grow in the Bathroom?

Moisture is the simple answer to black mould growth. Mould and mildew love damp conditions, which is why you may suffer the most with mould growth in your bathroom and kitchen. Poor air circulation, poor ventilation and warm temperatures are other contributing factors, as well as leftover residue from soaps, products and food waste.

Each of these factors create a breeding ground for mould growth, and due to the moisture and warmth present, stubborn spores will keep returning. So how do you remove mould from silicone sealant and hard, colour fast surfaces?

Mould and Mildew Cleaning Products

The best way to remove mould and mildew from your bathroom and kitchen is to use a professional cleaning product such as GK Mould & Mildew Cleaner. This product not only cleans stubborn mould, mildew, grime and household contamination, it penetrates mould spore roots which causes them to decompose. This deep cleaning is long-lasting for continuous protection.

How to Apply GK Mould & Mildew Cleaner

GK Mould & Mildew Cleaner is easy to use and fast working. Before you start, remove any loose dirt. We recommend finding a small, hidden portion of the substrate to test before use.

Step 1: Spray a generous coat on the affected area at a distance of 15 - 20 cm.
Step 2: Leave the product to dry.
Step 3: Once dry, agitate the affected area using a soft brush or pad.
Step 4: Wipe off mould / mildew using a damp cloth or kitchen towel and rinse the area with clean water.
Step 5: For stubborn stains repeat the process of steps 1 - 4.

The Benefits of GK Mould & Mildew Cleaner

GK Mould & Mildew Cleaner removes black mould immediately and hygienically to ensure a clean, healthy household environment. Regular use of the product will help to prevent the reappearance of spores. The formula provides long-lasting results in any room prone to damp for all hard, colour fast surfaces.

The product is perfect for use on silicone sealant, tiles, chrome, plastics, acrylic baths, ceramics and stainless steel. The formula contains no bleach or acids, enhancing its safety and surface compatibility, it is 100% soluble in water for effective cleaning and rinsing, and is low odour for a pleasant user experience.

Can I Use Vinegar to Remove Black Mould From Sealant?

If you prefer to use a home remedy then you can clean black mould with certain household products. 1 cup of white wine vinegar, mixed with 2 or 3 teaspoons of baking soda can be used to create a solution which you can rub into the affected area with a damp cloth. Rinse the formula once dry.

While this method will remove black mould temporarily, it is not recommended for long term use and will not penetrate the mould spores.

Can I Use Bleach to Remove Black Mould From Sealant?

You can clean black mould with bleach by mixing 1 part bleach to 4 parts water to create a spray solution. Spray it generously over the sealant then leave it to evaporate. Rinse the area after use with cool water and a sponge, then dry with a microfibre cloth.

Please be aware that using a non-specialist formula could cause damage to the surface if you do not use the appropriate quantities.

How Do I Prevent Black Mould From Returning?

There are a few ways to help stop the reappearance of black mould in your bathroom, kitchen and other household rooms. Open windows and doors after you shower or cook to remove any moisture from the air. Dry clothing in a well ventilated area or outside. Purchase a dehumidifier or extractor fan, and use mould resistant sealant.

Try to regularly wipe any silicone sealant after showering and cooking to deprive mould of the conditions it needs to grow. Keeping on top of cleaning in your bathroom and kitchen should be a priority to look after your health.

Black Mould From Cracks and Leaks

If you are suffering from dampness caused by a structural issue such as cracks in your wall, or a leak, then you will need to get professional help to work on your house. They will tackle your issues with extensive damp-proofing work and may use chemical sprays to kill mould before using waterproofing agents.


The best way to remove black mould from bathroom sealant and other hard surfaces in your bathroom and kitchen is to purchase a specialist cleaning product such as GK Mould & Mildew Cleaner. This will not only clean your house, but help to prevent the mould from reappearing.