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5 Easy Tips on Cleaning Moulds Off Windows Naturally

Black moulds on windows are hard to clean, but we have found a way to do it. At Premium Clean, our window cleaning services include cleaning moulds off windows.

Most of these moulds are due to water condensation in the pane. The water dipping to the bottom affects the drywall around the windows. Since it has moisture, the mould can quickly grow.

Visible moulds around the window is not a pretty sight. It does not only look unattractive but harmful to your health. If you are stressing over the black moulds in and around your windows, don’t be.

Here are several ways of cleaning moulds off windows and how you can prevent them.

Naturally Cleaning Moulds Off Windows

Primary Causes of Moulds on Windowsills

There could be several reasons why there is a presence of mould on your windows. However, the main culprit is the moisture that comes from condensation or leaks. The most vulnerable are your kitchen and bathroom windows.

Cleaning the moulds of your windows without knowing its cause is pointless. It means you will need to clean it over again. Not only will it take much of your time and effort, but it can also damage your windows eventually. Furthermore, the mould spores while cleaning can affect your lungs and nervous system and irritate your skin and eyes.

To prevent further damage and health concerns from moulds, you need to locate the source of the moulds on your windows and provide the needed solution. Some common causes of mould growth include leaking pipes, damaged window frames, faulty ventilation or heating systems, moisture from the steam or showers, inadequate airflow, and rising dampness.

Consider the Following When Cleaning Moulds Off Windows

You need to consider two important points before venturing into your window cleaning tasks.


The first thing you need to remember is that mould is dangerous. The spores can spread quickly and can have adverse reactions in humans. When cleaning moulds off windows, you need to wear protective clothing.

Some of the safety protective gear needed are safety goggles to protect your eyes, a face mask to protect your mouth and nose, and rubber cleaning gloves. For the face mask, an N-95 respirator will work.

Cleaning Products

There are many window cleaning products available to clean moulds in window sills. However, some of them can clean the moulds but do not remove the roots. Using them will not prevent the moulds from growing back after a few days. You must use the right products and tackle the cause of mould growth.

Cleaning Moulds off Windows Naturally

Using chemical products to clean moulds off windows is effective. The problem is they contain harsh chemicals that are as harmful as mould. Don’t worry. You can find several options to get rid of moulds without adverse effects.

Related Topic: 5 Window Cleaning Products and How They Work

Look at these five greenways in cleaning moulds.

Cleaning Moulds off Windows with Hydrogen Peroxide

hydrogen-peroxideOne useful household product that can get rid of moulds easily is hydrogen peroxide. It is an effective antiviral, antifungal, and antiviral solution in most medicine cabinets.

Aside from being an effective mould treatment for windows, you can also use this as a cleaning agent for kitchen counters and appliances, hard flooring, bathroom fixtures, and even on your walls.

Pour a 3% concentration into a spray bottle to use hydrogen peroxide. Test it in an inconspicuous area to check if it can damage or cause discolouration. Spray the affected and leave it for 10 minutes. Scrub the area to remove the stain and black moulds. Once done, wipe the area dry.

Cleaning Moulds Off Windows with Vinegar

Cleaning Solution - VinegarAnother Safe way to remove the moulds from the window is using mild vinegar. It is a mildly acidic product that can also clean, sanitise, and deodorise the area. According to experts, vinegar can kill 82% of mould species, including black moulds on porous and non-porous surfaces.

To use white vinegar, pour it on a spray bottle and spray on the mouldy surface. Do not dilute it or it will not be as effective as it should be. Leave the vinegar for an hour before wiping it dry.

Cleaning Moulds Off Windows with Baking Soda
Cleaning Solutions - Baking Soda and Water
A spoonful of baking soda and a glass of water

Baking soda is effective in absorbing odours and relieving heartburn. But don’t you know it is also effective in removing moulds during window cleaning?

Add one-quarter of this cleaning agent to a spray bottle filled with water to use baking soda. Let it dissolve in the water and spray it on the mouldy area. Let it sit, and use a scrub brush to remove the mould.

Rinse it thoroughly to remove any mould and baking soda residue. Spray it again and leave it to dry. It will kill any leftover moulds and prevent them from coming back.

Cleaning Moulds Off Windows with Essential Oils

Cleaning Solution : Essential oilsEssential oils are not only useful in aromatherapy, but they are also effective in cleaning moulds. Tea tree oil, for example, is a good antiseptic, deodorizer, and cleaning moulds.

Combine a teaspoon of tea tree oil with water in a spray bottle. Shake it vigorously and spray it on the mouldy surface. Leave it for an hour and wipe it dry with a microfibre cloth. Use protective gloves, especially if you are sensitive to essential oils.

Cleaning Moulds Off Windows with Lemon

Cleaning Solution : LemonLemons are useful kitchen staples that you can use to remove moulds. No doubt about that as it is a natural bleach, stain remover, and all-around cleaner. A high concentration of lemon can break down moulds, so it will be easy to clean them afterwards.

Squeeze lemon in a cup and pour it over the mouldy area. Leave it for five minutes and wipe the surface using a wet towel. You can reapply and scrub the surface until the moulds are gone.


We have given you five options for cleaning moulds off windows. These options are non-toxic and can be an alternative to harsh chemicals. They are safe not only for the family but also for the environment.

Should you need window cleaning, try our services at Premium Clean. They can help you tackle dirt and grime with their full cleaning services.

Last Updated on March 15, 2024

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