How to Remove Black Mould

Black mould is a common household problem that can have serious implications on both your health and the structural integrity of your home. Dealing with black mould promptly and effectively is crucial to maintaining a safe and healthy living environment. This article provides a comprehensive guide on mould removal Newcastle safely, covering prevention, DIY removal methods, and professional services.

Key Takeaways:

  • Black mould, scientifically known as Stachybotrys chartarum, thrives in damp and humid environments and can have serious health implications.
  • Identifying black mould is crucial, as it appears as dark greenish-black patches and has a distinct musty odor.
  • Common areas affected by black mould include bathrooms, kitchens, basements, attics, and window sills.
  • Preventing black mould growth involves maintaining proper ventilation, fixing leaks promptly, and keeping indoor humidity below 50%.
  • When removing black mould, wear protective gear, isolate the area, and use appropriate cleaning agents or natural remedies like vinegar and baking soda.
  • Disposing of contaminated materials properly is essential to prevent further mould spread.
  • Natural alternatives for black mould removal include vinegar, baking soda, tea tree oil, and hydrogen peroxide.
  • For extensive mould infestations, it’s best to hire professional mould remediation services.
  • Swift action is necessary to protect health and property from the harmful effects of black mould.
  • Regular maintenance and prevention can help avoid future black mould growth in your home.

mould removal

What is Black Mould?

Black mould, scientifically known as Stachybotrys chartarum, is a type of fungus that thrives in damp and humid environments. It appears as dark greenish-black patches on walls, ceilings, floors, and other surfaces. Black mould releases spores into the air, which can lead to health issues when inhaled.

Health Risks Associated with Black Mould

Exposure to black mould can cause various health problems, especially for individuals with respiratory conditions, allergies, or weakened immune systems. Common health risks associated with black mould include:

  • Allergic reactions
  • Asthma exacerbation
  • Respiratory issues
  • Fatigue
  • Headaches
  • Skin irritation

Identifying Black Mould

Identifying black mould is essential to address the issue promptly. It has a distinct musty odor and typically appears as slimy greenish-black patches. If you notice any of these signs, it’s crucial to take action immediately.

Common Areas Affected by Black Mould

Black mould tends to thrive in areas with high moisture levels. Common areas where you might find black mould include:

  • Bathrooms
  • Kitchens
  • Basements
  • Attics
  • Crawl spaces
  • Window sills
  • Pipes and ducts

Preventing Black Mould Growth

Preventing black mould growth is key to minimising its presence in your home. Follow these tips to prevent black mould:

  • Maintain proper ventilation
  • Fix leaks promptly
  • Use exhaust fans in bathrooms and kitchens
  • Keep indoor humidity below 50%
  • Ensure good air circulation

Step-by-Step Guide to Remove Black Mould

Gather the Necessary Supplies

Before you start the mould removal process, gather the following supplies:

  • Protective gear (gloves, mask, goggles)
  • Plastic sheets or garbage bags
  • Scrub brush
  • Detergent or mould cleaner
  • Water
  • Bleach (optional)
  • Vinegar or hydrogen peroxide (alternative cleaners)

Isolate the Area

To prevent the spread of mould spores, isolate the affected area by covering vents, doors, and openings with plastic sheets or garbage bags.

Wear Protective Gear

When dealing with black mould, protect yourself by wearing gloves, a mask, and goggles to avoid direct contact with mould spores.

Ventilate the Space

Open windows and use fans to improve ventilation during the cleaning process. This helps disperse mould spores and reduce their concentration in the air.

Remove the Mould

Scrub the affected area thoroughly using a scrub brush and detergent or mould cleaner. For stubborn mould, consider using a mixture of water and bleach (if suitable for the surface).

Clean and Disinfect the Area

After removing the mould, clean the area again with water and detergent to eliminate any remaining residue. If you prefer natural alternatives, consider using vinegar or hydrogen peroxide.

Dispose of Contaminated Materials Properly

Dispose of any materials that cannot be effectively cleaned, such as porous items heavily affected by mould. Seal them in plastic bags before discarding them.

Prevent Future Mould Growth

After removing black mould, take preventive measures to avoid its recurrence. Address any moisture issues and maintain proper ventilation in the affected area.

Natural Remedies for Black Mould Removal


Vinegar is an effective natural mould killer. Its acidity can break down the mould’s structure, making it easier to remove. Mix equal parts of white vinegar and water and spray it on the mouldy surface. Let it sit for a few minutes before scrubbing and rinsing.

Baking Soda

Baking soda is a non-toxic and eco-friendly option for mould removal. Create a paste by mixing baking soda with water and apply it to the mouldy area. After 15-20 minutes, scrub and rinse the surface.

Tea Tree Oil

Tea tree oil has natural antifungal properties. Mix a teaspoon of tea tree oil with a cup of water and spray it on the mould. Leave it overnight, and then clean the area the next day.

Hydrogen Peroxide

Hydrogen peroxide is effective against mould and mildew. Spray a 3% concentration of hydrogen peroxide directly onto the mould and let it sit for 10 minutes before scrubbing.

Hiring Professional Mould Remediation Services

If the mould infestation is extensive or persists despite DIY efforts, it’s best to seek professional mould remediation services. Qualified experts have the expertise and equipment to handle mould removal safely and efficiently.


Dealing with black mould requires swift action to protect both your health and your home. By following the outlined steps, you can safely and effectively remove black mould from your living spaces. Remember to take preventive measures to avoid future mould growth and, if needed, consider consulting professionals for a thorough mould remediation.


Is black mould dangerous?

Black mould can be hazardous, especially for individuals with respiratory issues, allergies, or weakened immune systems. It can lead to various health problems if left unaddressed.

Can I remove black mould myself?

Yes, you can remove small areas of black mould on your own using proper protective gear and cleaning agents. However, for extensive infestations, professional assistance is recommended.

What are some natural alternatives to chemical mould cleaners?

Vinegar, baking soda, tea tree oil, and hydrogen peroxide are effective natural alternatives for removing black mould.

How can I prevent black mould growth in my home?

Prevent black mould growth by maintaining good ventilation, fixing leaks promptly, and keeping indoor humidity levels below 50%.

When should I seek professional mould remediation services?

If you have a large or persistent mould infestation, it’s best to hire professional mould remediation services for safe and thorough removal.