Mould

Mould requires three conditions to grow: a food source (organic material such as timber, paper-faced plasterboard, or dust), moisture, and warmth. Roof spaces can provide all three, particularly when condensation or slow leaks introduce persistent moisture into the cavity. Mould spores are always present in the air and will colonise any damp organic surface within 24 to 48 hours if conditions are suitable. Common mould species found in roof spaces include Aspergillus, Penicillium, and Cladosporium, which can appear as black, green, or grey patches. Mould in the roof space is a health concern as well as a building concern. Mould releases spores and volatile organic compounds (VOCs) that can trigger allergic reactions, asthma attacks, and respiratory irritation in building occupants, particularly when the mould-contaminated air from the roof space is drawn into the living areas through ceiling penetrations, ductwork, or evaporative cooling systems. In Gippsland, mould in roof spaces is most commonly associated with condensation issues on metal roofs during winter. Poor ventilation, missing or inadequate sarking, and unsealed ceiling penetrations (particularly downlights and exhaust fans) are the usual contributing factors. Town & Country Roofing addresses the root causes of mould — leaks, condensation, and ventilation deficiencies — as part of roof inspection, repair, and replacement services.