Water-damaged drywall, wood materials, jute, wallpaper, and cardboard are prone to fungal growth. All moulds need water to grow. Mould can grow anywhere there is water damage, high humidity or dampness. Most often moulds are confined to areas near the source of water. When mouldy material becomes damaged or disturbed, mould spores can be released into the air.
Exposure occurs if people inhale the spores.
Mould growth on the interior surfaces of buildings is a risk factor for health problems. These moisture problems should be the focus of assessment and control efforts, followed by clean-up, remediation of contaminated materials, periodic inspections, and preventive and remedial maintenance. The Internet resources below contain detailed information. If mould contamination is extensive, the employer should seek professional assistance from private sector consultants who specialize in mould and mould remediation. Occupants of buildings contaminated with mould should be advised of the presence of the mould and given information on the health effects of mould.