Mould and Indoor Air Quality

Mould is invisible…
but its effects are not.

Mould spores and indoor air contaminants are not always visible, but they can cause respiratory issues, reduce a building’s value, and affect the quality of life of its occupants. Our analyses help you understand what’s present in your environment and take action before it’s too late.

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Why Conduct a Mould Test?
How Do I Know If I Have Mould?
Proven Techniques for Every Situation
Case Study: A Contaminated Rental Building

Why Conduct a Mould Test?

Mould is not just an aesthetic issue—it is a recognized public health risk. Health Canada recommends assessing any sign of indoor contamination.

  • Children, seniors, and people with asthma are the most vulnerable
  • Repeated exposure can cause chronic coughing, wheezing, asthma attacks, or severe allergies
  • After water infiltration, mould can develop in less than 48 hours

What We Guarantee

Results delivered within agreed timelines

Clear, simplified reports that are easy to understand

Transparent communication from start to finish

Protection through our insurance coverage ($2M)

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Your Questions,
Answered

What Are the Signs of Mould in a Home?

Mould may appear as black, greenish, or whitish spots on walls, ceilings, window frames, or floors. However, it is not always visible—it can develop behind walls, under flooring, or inside ventilation ducts. Persistent musty odours, excessive humidity, frequent condensation, or health issues such as respiratory irritation, coughing, or unexplained allergies are common warning signs. A mould test is the most reliable way to confirm its presence and assess its extent.

How Much Does an Indoor Air Quality Test Cost?

In Quebec, the cost of a professional indoor air quality test, including mould detection, is generally around $500 for a standard inspection. Pricing may vary depending on the size of the building, the number of samples required, the complexity of the analysis, and turnaround time. More comprehensive assessments or multi-area testing may range from $700 to $1,000, or more depending on scope.

How Long Does It Take to Receive Results?

Turnaround time depends on the method selected and the level of urgency. For standard testing, results are typically available within 3 to 5 business days. Expedited services can deliver reports within 24 to 48 hours. In all cases, Groupe SolAirEau ensures that results are not only delivered promptly but also clearly explained, with practical recommendations for effective action.

What Should I Do If the Results Confirm the Presence of Mould?

If contamination is confirmed, the first step is to identify and correct the source (water infiltration, poor ventilation, excessive humidity). Next, appropriate remediation must be carried out: specialized cleaning, removal of contaminated materials, and corrective measures to prevent recurrence. Our report always includes clear, actionable recommendations and can be used as supporting documentation for insurers, contractors, or public health authorities. The sooner mould is addressed, the lower the risk to occupant health and property value.
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