Mould vs Mildew: Key Differences, Health Risks, and Effective Prevention
Mould and mildew are both types of fungi that thrive in damp environments, but they differ in appearance, growth patterns, and health risks. Understanding these differences is essential for effective treatment and prevention. Here’s a detailed exploration of both, their health impacts, and the best ways to treat them...
DIFFERENCES BETWEEN MOULD AND MILDEW
APPEARANCE
MOULD
Colour and Texture: Mould can appear in various colours, including black, green, blue, or grey. It often has a fuzzy or slimy texture, especially when it’s actively growing.
Growth Pattern: Mould grows in irregular patches and can spread rapidly if not addressed. It may appear in colonies or clumps.
GROWTH CONDITIONS
MOULD
Preferred Surfaces: Mould thrives on porous surfaces like wood, plastics, drywall/plaster, soft furnishings and carpet, where it can penetrate and grow deep into the material.
Moisture Needs: Mould requires a high level of moisture and warmth to grow. It can develop from leaks, high humidity, or inadequate ventilation.
MILDEW
Preferred Surfaces: Mildew generally grows on non-porous surfaces such as tiles, glass, tin roofing and vinyl, though it can also be found on more porous surfaces if moisture is not managed.
Moisture Needs: Mildew prefers warm, damp environments but usually thrives in less extreme conditions compared to mould.
HEALTH RISKS
Both mould and mildew can pose health risks, though the severity can vary.
MOULD
Health Effects: Mould exposure can lead to a range of health issues, particularly in people with allergies, asthma, or compromised immune systems. Common symptoms include coughing, wheezing, nasal congestion, throat irritation, and skin rashes. Long-term exposure can contribute to chronic respiratory issues and more severe health problems.
Toxic Mould: Certain types of mould, such as Stachybotrys chartarum (black mould), produce mycotoxins that can be particularly harmful and require professional remediation.
MILDEW
Health Effects: Mildew can also cause respiratory issues, particularly if it’s been growing for an extended period. People with allergies and asthma may experience symptoms similar to those caused by mould, such as coughing and sneezing. Mildew is generally less likely to cause severe health problems compared to mould.
TREATMENT AND PREVENTION - MOULD
Assessment and Safety: Identify the extent of the mould problem and locate the source of moisture. Common sources include leaks, high humidity, and poor ventilation.
Bathrooms, air conditioning, closed-in areas and rooms away from the sun and furniture against walls like beds, bookcases and draws are the most common places to find mould.
Removal Methods
Wiping with vinegar helps but a product like Forcefield Mould Killer actually kills the mould spores and the roots that grow into the porous surface and is essential to prevent the return of the mould colony.
Bleach does not kill mould; it simply removes the visual mould but does not kill the roots and spores in and on the surface. This is why you start to see mould returning in a month or two to the same spot.
Safety: Always use PPE to protect your lungs and skin. Contact a professional who can properly treat and remove the mould and sanitise the surface to help prevent it from returning.
Professional Help: For extensive mould issues, consider hiring a professional mould remediation service to ensure thorough removal and safety.
Prevention
Moisture: Prevention is always better than cure. Address any sources of moisture, such as leaks or high humidity. Use dehumidifiers and ensure proper ventilation, especially in areas prone to moisture like bathrooms and basements.
Regular Maintenance: Regularly inspect and maintain your home to identify and address potential mould growth early. In the right conditions, mould can get away and out of control very quickly and before you know it you can have a very bad mould infestation and some serious health issues.
TREATMENT AND PREVENTION - MILDEW
Removal Methods
Cleaning: Surface Cleaning: Clean mildew from non-porous surfaces using a mixture of water and white vinegar or baking soda. You can also use Forcefield Mould Killer. Apply the solution, scrub with a brush or sponge, and rinse and dry.
Commercial Cleaners: For stubborn mildew, use commercial mildew/mould cleaners such as Forcefield Mould Killer, per the manufacturer’s instructions.
Drying: After cleaning, ensure the area is thoroughly dried. Use fans or dehumidifiers to speed up the drying process and prevent mildew from returning.
Prevention
Improve Ventilation: Enhance airflow in areas prone to mildew growth by using exhaust fans, opening windows, and ensuring proper ventilation.
Regular Cleaning: Clean surfaces regularly to prevent mildew build-up. Pay special attention to areas like bathrooms, kitchens, and basements where moisture levels are higher.
LONG-TERM STRATEGIES - ADDRESSING UNDERLYING ISSUES
Moisture Control: Both mould and mildew thrive in damp conditions. Address any moisture issues such as leaks, poor drainage, or high humidity to prevent future growth.
If you don’t “ turn off the tap”, i.e. stop the source of the moisture the problems will return over time and you will be back to square one.
Ventilation Improvements: Ensure adequate ventilation throughout your home to reduce moisture levels and prevent mould and mildew growth. Dehumidifiers are a great help and also UV-based Air Purifiers can also kill mould and Mildew.
Monitoring and Maintenance
Mould and mildew are both types of fungi that thrive in damp environments but differ in their appearance, growth patterns, and health risks. Mould is generally more aggressive, appearing in a range of colours and textures, and requires thorough remediation to address health risks.
Mildew, while still a concern, is typically less aggressive and easier to manage. By understanding these differences and implementing effective treatment and prevention strategies, you can maintain a healthier living environment and reduce the risks associated with these fungi.
Regular maintenance, moisture control, and proper ventilation and air con cleaning are key to preventing and addressing mould and mildew issues effectively.