Mould is a type of fungus that grows in damp or poorly ventilated areas and spreads through microscopic spores in the air. While it plays an important role in nature by breaking down organic material, mould inside a home or building can indicate excess moisture and lead to structural damage and health concerns. It commonly develops on walls, ceilings, insulation, and other surfaces where moisture persists, making proper testing and moisture control essential to maintain a healthy indoor environment.
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Moisture is the primary cause—commonly from leaks, high humidity, condensation, flooding, or poor ventilation.
Certain moulds can trigger allergic reactions, respiratory irritation, or more serious health issues, especially in vulnerable individuals.
You may notice visible growth, musty odours, staining, or worsening indoor air quality. Some moulds, however, grow hidden behind walls or under flooring.
Yes. Mould often develops in concealed areas such as wall cavities, insulation, ceilings, crawl spaces, and HVAC systems.
Symptoms may include coughing, sneezing, eye irritation, headaches, skin irritation, and aggravated asthma.
A professional inspection may include air sampling, surface sampling, moisture readings, infrared scanning, and visual assessment.
“Black mould,” often referring to Stachybotrys chartarum, grows in areas with long-term moisture problems, such as leaks or flooding.
Mould can begin developing within 24–48 hours of a moisture event.
Keeping indoor humidity below 50% helps reduce the risk of mould development.
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