Mould testing

Mould Air Quality Testing

Air testing identifies mould spores in the indoor environment and compares indoor readings to outdoor baseline levels. A good background if mould is suspected.

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Call 905 638 4307

Indoor air quality inspector in a respirator pointing at mould on a wall

Why it matters

Testing matters for your family

Mould isn’t just unsightly: certain species produce mycotoxins that can affect indoor air quality. Children, elderly family members, and those with respiratory conditions are particularly sensitive.

Professional air quality testing measures actual spore counts and identifies species present, giving you facts rather than guesswork.

When to test

After water damage from flooding, leaks, or burst pipes
Persistent musty odours you can’t locate
Visible mould growth beyond a small surface area
Family members experiencing unexplained allergies, asthma flare-ups, or respiratory issues
Before or after purchasing a home
Post-remediation verification that mould removal was successful

What’s included

Indoor air samples collected with calibrated equipment
An outdoor baseline sample for comparison
Analysis by an accredited laboratory
A clear report explaining what was found, what it means, and recommended next steps

FAQ

Common questions

Have a question that isn’t here? Call 905 638 4307 or send us a message.

When should I test the air for mould?

After water damage, when there is a musty odour you can’t locate, when mould is visible beyond a small area, when family members have unexplained allergy or asthma symptoms, before or after buying a home, and after remediation to verify that it worked.

Why compare indoor and outdoor air?

Mould spores are always present outdoors. Comparing indoor readings to an outdoor baseline shows whether the indoor environment is different from what you would normally expect.

Is this the same as a DIY test kit?

No. All samples are analyzed by an accredited laboratory, not a DIY kit.

What if mould is visible?

We can also collect physical samples to identify the specific species with mould bulk testing, or carry out a full mould assessment.

How much does it cost?

Every property and project is different. Contact us to discuss your project and request a quote.

Our process

From a clear intention to practical recommendations

Every project with EnviroGuard Consulting and Testing follows the same six steps.

Intention

Every project begins with a clear intention: identifying the purpose of the assessment, whether it’s for asbestos, mould, or indoor air quality concerns.

Methodology

A structured methodology is followed, including careful on-site sampling, air monitoring, and material collection according to recognized industry standards.

Laboratories

Samples are sent to accredited laboratories for analysis.

Results

Laboratory analysis produces accurate and reliable results.

Interpretation

Results are thoroughly reviewed and interpreted to understand potential risks and compliance requirements.

Recommendations

Practical, actionable steps for remediation, safe management, or ongoing monitoring to ensure a healthy and compliant environment.

Why EnviroGuard

Experience, integrity and regulatory conformity

Regulations

O. Reg. 278/05 Asbestos on construction projects and in buildings and repair operationsOccupational Health and Safety Act
O. Reg. 490/09 Designated substancesOccupational Health and Safety Act
O. Reg. 347/90 General waste management, including asbestos wasteEnvironmental Protection Act

Under the Occupational Health and Safety Act (OHSA), the ministry is responsible for regulating occupational health and safety in workplaces, which includes schools, hospitals, and any place where people work.

Experience

With over 30 years of experience in solid waste management across Ontario and 20 years in environmental science, EnviroGuard Consulting and Testing provides expert asbestos, mould, and environmental testing services.

Hands-on knowledge of hazardous material assessment and indoor air quality ensures every project is handled safely, efficiently, and in full compliance with Ontario’s environmental and occupational health regulations.

Integrity

Built on high integrity and regulatory conformity, EnviroGuard delivers precise testing, reliable reporting, and practical abatement and remediation recommendations.

Clients can trust EnviroGuard to protect their buildings, occupants, and projects while maintaining the highest standards of safety and compliance.

Our services