UNDERSTANDING MOULD GROWTH IN STRATA PROPERTIES POST-CYCLONE ALFRED

The aftermath of ex-Tropical Cyclone Alfred has left many strata properties across Southeast Queensland vulnerable to mould growth due to excess moisture and water ingress. Mould is a natural part of the environment, but when left unchecked in indoor spaces, it can present serious health risks and structural damage to buildings. Understanding how mould develops, its health implications, and the conditions that promote its spread is essential for managing it effectively.

What is Mould?

Mould is a type of fungi that thrives in moist, warm environments. It reproduces through microscopic spores that are always present in the air. When these spores land on damp surfaces, they begin to grow and spread.

How Does Mould Grow?

Mould needs two key elements to grow:

1. Moisture – Mould cannot survive without moisture. Flooding, leaks, and high humidity create the perfect environment for growth.
2. Organic Material – Mould feeds on cellulose-based materials such as wood, drywall, carpets, and even dust.

Once mould begins growing, it can spread rapidly, sometimes within 24 to 48 hours of water exposure. This makes it crucial to understand not only how it grows but also how to prevent the conditions that allow it to thrive.

Health and Structural Impacts of Mould

Mould exposure can cause respiratory issues, allergic reactions, and, in some cases, toxic effects due to mycotoxins. Mycotoxins are toxic substances produced by certain mould species, which can become airborne and be inhaled or come into contact with skin. While some mycotoxins have minor effects, others can lead to more serious health complications, particularly in individuals with respiratory conditions or weakened immune systems. Beyond health concerns, mould can weaken wood framing, drywall, and insulation, leading to long-term structural issues and persistent odours that affect indoor air quality.

Creating an Unfavourable Environment for Mould

The best approach to mould is prevention. By making indoor environments less hospitable to mould growth, strata properties can significantly reduce the risk of future infestations. Key strategies include:

• Moisture Control: Moisture is the single most important factor in mould growth. Strata properties should implement drainage solutions to prevent pooling water, fix leaks promptly, and use moisture-resistant building materials where possible.
• Ventilation Improvements: Proper airflow helps regulate humidity and prevent condensation. Utilizing exhaust fans in bathrooms, kitchens, and laundry areas, as well as encouraging residents to open windows when possible, reduces moisture accumulation.
• Dehumidification Strategies: In areas prone to high humidity, dehumidifiers can help maintain indoor relative humidity below 60%, an essential threshold for inhibiting mould growth.
• Routine Inspections and Maintenance: Regular checks of common areas and individual units help detect early signs of leaks, condensation, and poor ventilation. Educating managers and residents on the importance of early intervention can prevent small moisture issues from escalating into widespread mould infestations.

What to Do If You Find Mould

If mould is detected in a property, prompt action is necessary to prevent further spread and minimise health risks. Steps to take include:

• Identify and Address the Source of Moisture: Any leaks, condensation, or water damage that contribute to mould growth should be addressed immediately to stop further contamination.
• Avoid Disturbing the Mould: Scrubbing or brushing mould can release spores into the air, increasing exposure and the risk of further contamination.
• Contain the Affected Area: Close doors and isolate the affected space to prevent mould spores from spreading to other parts of the building. Turn off HVAC systems to prevent spores from circulating through air ducts.
• Seek Professional Assistance: For significant mould growth, professional remediation services are essential to ensure safe and thorough removal while preventing recurrence. Certified professionals have the expertise and equipment to address large infestations without spreading mould further or causing health hazards.

By fostering a proactive approach to mould awareness and prevention, strata properties can reduce the long-term impacts of mould, maintaining both the health of their residents and the integrity of their buildings.

For expert guidance on mould and building restoration, New Life Restorations provides professional assessments and tailored solutions for strata properties.

Article contributed by New Life Restorations.