P R O FE S S I O N A L M O I ST U R E A SSE SSM E N T Identification of Mould Trained Environmental Consultants first determine humidity and moisture levels in affected areas. Areas exceeding 60% humidity for extended periods are ideal for mould growth. One way to detect areas of a differing temperature is through thermal image scanning, which allows consultants to detect areas that may be related to air leakage or moisture accumulation cooling, as shown in figure 4 below. mould. Air samples determine areas where further testing may be required. Spore Analysis The purpose of testing is to determine the varieties of mould present, and whether toxic mould is present. The everyday presence of spores in our lives is important to consider. Spores exist in our indoor and outdoor environments; we breathe and consume spores daily. What does this mean for the assessment of spores? This is where the specialized expertise of a professional is essential. Testing on its own is not sufficient to determine confirmation and the extent of a mould problem or the remediation requirements. Specialists are trained to analyze the lab results for determining what further action, if any, is required. They will also be able to determine if the issue can reasonably be handled by a homeowner or if it requires the use of remediation experts. M O U LD R E M E D I A T I O N Remediation is typically classified as the removal of visible mould from affected areas and Figure 4: Thermal image of a water-soaked ceiling Once areas of concern are identified, consultants utilize observational skills to search for blemishes or blisters in walls, ceilings, and flooring (however, the presence of these deficiencies is not proof of mould). Testing Methods Testing methods such as swab sampling, tape transfers, and bulk sampling are used to determine and analyze mould composition. Air sampling devices are also utilized to determine if the mould is releasing spores into the air (called sporulating). Air sampling is helpful in cases where, for example, people in an office space or building are complaining of irritation but there are no visible indicators of the disinfection of all other surfaces and the air in the affected structure. Successful remediation is determined by significant reductions in undesired varieties and the removal of specific toxic varieties identified during the sampling and assessment process. This is achieved with the successful removal of the damaged building materials and confirmation that the air has not been compromised. If the air has been compromised, then the air must also be cleaned. Remediation will only be fully effective if the source of the moisture is determined and resolved, otherwise, the building materials will be replaced, and the mould will regrow once those materials are
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