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Level 1
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Normal conditions, no mould damage.
Surface samples return very low to non-detectable traces of fungi.
Fungi detected indoors originates from outdoors. |
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| Level 2 |
Small area of visible growth.
Less than 1m2 in area.
Spot cleaning and minor mitigation required.
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| Level 3 |
Serious mould damage over a period of time.
Visible mould growth clearly visible on less than 25% of all surfaces or not greater than 10m2. Usually found in situations where there has been excessive moisture that has been trapped or generated indoors for an extended period of time. Building materials and contents may have sustained more than surface damage with some penetrating moisture and mould growth.
Mould remediation required by trained techicians. |
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Level 4
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Severe mould damage affecting structural integrity of building materials such as wall and ceiling linings.
Visible mould growth occurs on greater than 25% or more than 10m2 of interior surfaces.
Structural materials most likely have high moisture content and require specific drying.
Mould remediation and structural repair by trained personnel required. |
