How Do You Get Rid of Black Mould on Windows?
Do you see any black spots or fuzzy patches appearing up your window frames or sills? These might be signs of black mould an annoying and sometimes dangerous problem which many homeowners experience. Black mould thrives in damp and poorly ventilated areas making windows prime real estate for breeding – especially during the more humid climates or during colder months when condensation tends to build up.
Beyond being unsightly to look at, black mould has the ability to trigger allergies, respiratory issues and even damage window frames and seals if they’re left unchecked.
Fortunately, getting rid of black mould is not as tough as you might think. This article will be listing down effective cleaning methods for getting rid of black mould from your windows and preventing it from growing in the future. This piece will also discuss natural remedies, chemical solutions and share practical tips like improving ventilation, etc.
Whether you’re tackling a small patch or dealing with a more persistent problem, these steps will help keep your windows – and your home – free from mould. If you’re preparing for quality bond cleaning in Sunshine Coast, hiring professional services too can help you in tackling any mould related issues.
1. Identifying the Causes of Black Mould
Before you go ahead and tackle the issue of black mould, it’s essential to identify what is causing it in the first place. The principal offenders are excessive dampness and inadequate ventilation. When warm, damp air is brought into contact with the cold window surface, condensation begins to develop providing ideal conditions for mould growth. Other contributing factors include, leaking windows, insufficient insulation and drying clothes inside without proper airflow.
If you notice condensation forming on your windows frequently, it’s a sign that the humidity levels inside your home may be too high. So, address these underlying issues first to get a more long term resolution for the problem.
2. Natural Cleaning Methods

For those who want eco-friendly solutions – white vinegar is an excellent natural remedy for the issue of black mould growth. White vinegar has natural antifungal properties, you just need to spray some undiluted white vinegar directly onto the affected surfaces and let it sit there undisturbed for over an hour. Then wipe it away using a clean cloth.
Apart from this, baking soda is another natural mould killer. Mix 1 teaspoon of baking soda with water in a spray bottle, apply it to the mould affected area, scrub using a brush and then wipe it off with a clean rag. Tea tree oil is also known for its antifungal properties and can be used to treat mould surfaces when mixed in with water.
3. Chemical Cleaning Solutions
One powerful cleaning option is to use bleach, but it needs to be administered with caution as it can produce a lot of harmful fumes. Mix 1 part bleach with 3 parts water, applying this solution to the mouldy area, then scrub it away using a brush. Later, wipe the area clean with a cloth. When carrying out this process, make sure you have protective gear on, like gloves and a mask to limit your exposure to the chemical, and ensure proper ventilation in the area.
Another option is to use commercial mould removers. These will help kill the mould spores and prevent regrowth. These commercial mould removers are particularly useful when you have a widespread mould infestation in your home or if you’re preparing for detailed Bond Cleaning Sunshine Coast, where you must ensure the property is mould free for the inspection day.
4. Improving Ventilation and Reducing Humidity
One simple way to reduce the future growth of black mould is by improving indoor ventilation. Open the windows regularly to allow the fresh air to circulate through your spaces, and in the kitchens and bathrooms, use exhaust fans to remove excess moisture build up. A dehumidifier can be particularly useful when the climate is humid as it will help reduce indoor moisture and prevent condensation from forming on the windows.
In addition to this, keep the furniture away from the windows and use moisture absorbing materials like silica gel to further minimise humidity inside your rooms.
5. Sealing and Insulating Windows
When you have tightly sealed or insulated windows, there are fewer chances for condensation to occur. So, check your window frames for any gaps where air can come through and apply weather stripping or caulking to seal them down. Use double glazed windows if possible to reduce the temperature difference between the indoor and outdoor air and prevent condensation.
If your windows are old and prone to moisture build up, consider upgrading them to more energy efficient models. This may seem like a costly investment, but trust the fact that it will improve the air quality significantly and reduce the need for constant mould removals.
6. Preventive Maintenance and Regular Cleaning
Regular maintenance is essential to keeping mould at bay. Clean your windows frequently using a mild detergent or a vinegar water solution to remove any early signs of mould growth from them. Wipe down the condensation formed on the windows daily, especially during winter, to reduce the risks of black mould formation. You can also go ahead and use mould repellent sprays or coatings on your window frames and sills to provide them with long-term protection.
If you’re a tenant and are trying to meet the professional standards of a thorough Bond Cleaning Sunshine Coast, ensure that every corner of your home is spotless and free from the clutches of mould.
How To Remove Black Mould On Windows?

Wrapping up
If the mould has spread extensively, it may be time to call in the professionals. Some mould infestations can indicate deeper more underlying issues that cannot be tackled in DIY mode and need expert interventions. Don’t hesitate to call the pro when you need to. With these steps and a few precautions, you’ll be able to keep your windows and home mould proofed. Happy Cleaning!