• Do you know what you are breathing? Contact us, we can tell you


Did you know that several chronic diseases result from poor indoor air quality?

Did you know that people with asthma and allergies, young children and the elderly, as well as people with weak immune systems, are most vulnerable to poor indoor air quality?

Did you know that according to the « Institut national de santé publique du Québec » (INSPQ) guide, one out of three Canadian houses do not comply with acceptable indoor air quality criteria? Contamination varies from low to high.

Air quality is essential for a good quality of life. The presence of mould and fungus in the air can cause health problems.


Several researches have shown that toxins linked to the presence of mould in our homes can damage human body organs such as the liver, nervous system, digestive system and immune system.

That is why you should pay particular attention to the quality of the air you breathe in your home, through an air quality test that allows you to know the presence of microorganisms and their potential pathogenic, toxigenic, allergen or irritant effects.


Before any sampling, we start by analysing of the history of the building through a brief survey, to learn about the various symptoms experienced by the occupants.

Following the survey, we start with a visual inspection, looking for signs of mould, odours, water infiltration, and excessive moisture, then verify temperature, humidity and carbon monoxide (CO) and carbon dioxide rates, using state-of-the -art instruments.

With a pump and spore traps, we collect air samples which will be analysed in MDDEFP certified laboratories, for air quality parameters, and by microbiologists specialized in air microbiology.

Subsequently, a Diligence Inspection investigator will provide you with a detailed report, including recommendations aimed at correcting any issue if necessary.


The home environment may contain contaminants which, when combined with a lack of air exchange, are likely to affect the health of occupants.

  • Runny nose
  • Sneezing and watery eyes, coughing, wheezing and difficulty breathing
  • Headaches and fatigue
  • Throat irritation, burning, and secretions
  • Nose irritation, burning and congestion
  • Bleeding or running nose
  • Abnormal shortness of breath
  • Fever sensation
  • Rash, skin irritation
  • Nervousness, unexplained irritability
  • Asthma
  • Ear infections
  • Pneumonia
  • Trouble concentrating
  • Dizziness, fatigue
  • Insomnia, drowsiness
  • Unexplained muscle pain, diminished physical capacity


You can count on our availability and flexibility, as well as our more than 10 years of experience, upon your next inspection. We provide residential and commercial inspection services with attention to details and focus on client satisfaction.

  • We are a team of passionate professionals who coordinate their efforts in order to help customers.
  • We develop long term relationships and generate exceptional results for our clients.
  • Diligence Inspection is available 7 days a week with quick appointments.
  • We always keep customers informed and give access to any information that concerns them.Many clients trust Diligence Inspection team.
  • Through our years of experience in building inspections and civil engineering, we gained unlimited knowledge of the field.
  • We continue to expand our knowledge and we strive to ensure the best quality/price ratio.We have professional liability insurance.
  • Do you know what you are breathing?
    Contact us, we can tell you

  • Phone :
    514 963-1425

  • Area: Laval, Montreal, North Shore and South Shore.

About Us

Since 2009, Diligence Inspection performs residential and commercial inspections that help clients make informed decisions with confidence.

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