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Air Quality and Mold Testing Ottawa

Improving your indoor air quality is a challenge you can actively address.

Air Quality Testing for Mold

Our Services 

Worried about your indoor air quality? Our professional assessment can evaluate the health of your home or building and offer practical solutions for identifying and preventing potential issues.

Effectively managing the spaces where we live and work can help minimize indoor air quality (IAQ) concerns. We provide expert evaluations of your home or building’s health in the Ottawa region. Since IAQ and mold issues are often complex and microscopic, a thorough assessment is essential to identify problems and solutions accurately. 

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Airborne Mold / Fungi

Mold growth is one of the most common indoor air quality problems. Many fungi produce irritants, allergens and some molds produce toxins. Fungal growth in buildings is undesirable and may cause health problems for building occupants

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Bacteria & Viruses

Bacterial communities can develop in HVAC systems. Various research findings have shown that HVAC systems provide favourable breeding grounds for some microbials leading to subsequent but unintentional pollution of indoor air. We can quantify the amount of bioaerosols in your indoor air.

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Dust Mite Allergen

Dust mite allergy occurs as a result of an allergic reaction to small insects that typically inhabit household dust and bedding. Many people with dust mite allergy also experience signs of asthma, such as wheezing and difficulty breathing.

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Pollen Allergen

Pollen is one of the most common triggers of seasonal allergies. Pollen allergy occurs due to an immune response to airborne pollen grains, the tiny particles released by trees, grasses, and weeds.

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Volatile Organic Compounds (TVOC)

VOCs are emitted as gases from certain solids or liquids. VOCs include a variety of chemicals, some of which may have short and long-term adverse health effects. Concentrations are consistently higher indoors than outdoors.  VOCs are emitted by a wide array of products numbering in the thousands.

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HVAC Ducts & Ventilation Assessment

Workers desire healthy and comfortable working conditions and presence of mold in an HVAC system is a common complaint. We can conduct tests to inspect for dirty ducts, poor ventilation, and the presence of mold and bacteria in HVAC systems

  • Is sampling and testing for mold necessary?
    Sampling is not always necessary since testing can be quite expensive. However, our experience has shown that testing can uncover issues that would otherwise go unnoticed. Keep in mind our initial consultation package includes some testing for mold and general indoor air quality parameters at no additional charge.
  • How do I know if I need a mold or air quality test?
    You may need a test if you notice any signs of mold, experience unexplained health issues, or if your property has experienced water damage or high humidity.
  • How long does it take to get results from mold testing?
    The time it takes to get results from mold testing can vary depending on the method used and the lab processing time. Here's a general breakdown: Spore-trap method: The spore-trap method using Air-O-Cell cassettes is one of the most commonly used techniques. Once the samples are sent to a lab with a chain of custody, results usually take 2 to 5 business days. The lab requires this time to analyze the samples for mold types and concentrations. Mycometer method: Is a tool for rapid on-site measurements of the level of aerosolized mold in a room. Interpretation criteria is provided and results usually take a less than 2 hours if performed on-site. InstaScope technology: This instrument can evaluate airborne biology instantly and generate reports on-site. InstaScope can analyze particle data and produce real-time results that are consistent and unbiased. ERMI Testing: ERMI (Environmental Relative Moldiness Index) mold testing is a method developed by the EPA that uses DNA analysis to quantify and identify 36 species of mold commonly found in indoor environments. It provides a moldiness score, which helps assess the potential health risk in a home or building. Turnaround time is usually 3 to 10 days.
  • Will your mold testing services find hidden mold?
    Yes, if mold spores and fungal fragments are present in the indoor air, our equipment will detect the abnormal levels of fungi. Howewer, we do not conduct intrusive, invasive, or destructive inspections, such as cutting open walls or ceilings.
  • Do you also perform mold remediation services?
    No, we will never recommend a specific remediation or abatement contractor to perform the cleanup work due to potential conflicts of interest. Our role is solely to provide an honest opinion.
  • How do I know if I need a mold inspection?
    You may need a mold inspection if you notice a persistent musty odor, see visible mold growth, or experience unexplained allergy-like symptoms. Water damage, leaks, or high humidity in your home can also be indicators that a mold inspection is necessary. If you’re buying or selling a property, a mold inspection can help uncover any hidden issues.
  • What does a mold inspection involve?
    A mold inspection typically involves the following: An initial consultation by discussing with the client any visible mold, musty odors, or areas of concern within the property; a visual examination, moisture detection, air and surface sampling, measuring indoor humidity and providing a detailed report.
  • Can mold exposure cause health problems?
    Yes, mold exposure can cause health problems, especially for individuals with allergies, asthma, or weakened immune systems. Common symptoms include coughing, sneezing, throat irritation, skin rashes, and eye irritation. Prolonged exposure may lead to more severe respiratory issues or exacerbate pre-existing conditions. Some molds produce mycotoxins, which can be harmful when inhaled or ingested. Regardless of the health effects, indoor mold is undesirable. If you suspect mold exposure, it’s crucial to address the issue quickly and eliminate the moisture problem that allowed it to grow.
  • What are the types of mold that are typically found on water damaged building materials and known to have potential negative effects on health?
    The types of mold typically found on water-damaged building materials that can negatively impact health include: Stachybotrys chartarum (Black Mold): Known for producing mycotoxins that can cause respiratory issues, headaches, and other health problems. Aspergillus: This genus includes several species that can produce allergens, irritants, and mycotoxins, potentially leading to allergic reactions and lung infections. Penicillium: Often found on damp materials, some species can produce mycotoxins and cause allergic reactions, asthma, and other respiratory issues. Cladosporium: Common in both indoor and outdoor environments, it can trigger asthma, allergies, and respiratory infections. Chaetomium: Frequently found on water-damaged materials, it can cause allergic reactions, respiratory issues, and, in some cases, infections.
  • What should I do if mold is found in my home?
    Promptly address the moisture source and remove the mold using appropriate cleaning methods or by hiring a professional remediation service. Ensure the affected area is thoroughly dried to prevent regrowth. Consider testing the air quality to confirm that the mold has been effectively removed.
  • What is included in an indoor air quality assessment?
    Our one-hour initial consultation is our most popular service, offering a comprehensive scan of your indoor living environment for mold, TVOCs, CO2, bacteria, pollen, and fine particulates (PM2.5). This assessment provides peace of mind and covers some of the most common general indoor air quality parameters. For more details on our services, please visit our pricing page.
  • What advantage do you have over other indoor air quality testing companies?
    We use the most advanced instrumentation and equipment to deliver real-time, same-day results, enabling us to inspect more areas of the indoor environment at a more competitive price.
  • Who will you send to our property as the investigator?
    Currently, you will only interact directly with the experienced and certified owner of the business. We will not send an inexperienced person to assess your property.
  • Will air quality testing make sure my air is safe?
    We can identify the most common indoor air quality issues and provide practical solutions to prevent, reduce, and minimize indoor pollutants. We assist individuals suffering from asthma and allergies. However, because each person is unique, we cannot guarantee that the air will be perfectly safe.
  • Do you provide air quality testing services outside of Ottawa region?
    Yes, we provide indoor air quality and mold testing services throughout eastern Ontario. However, additional travel charges will be applied to cover travel time and expenses outside of the Ottawa region.
  • How can I improve my indoor air quality?
    Improve indoor air quality by regularly cleaning and vacuuming to reduce dust and allergens, using air purifiers with HEPA filters, and ensuring proper ventilation by opening windows or using exhaust fans. Keep humidity levels low to prevent mold growth and avoid smoking indoors. Use non-toxic cleaning products and minimize the use of harsh chemicals.
  • What types of indoor allergens can be tested for?
    Some of the most common indoor allergens that can be tested for include; dust mites, pet dander, pollen, mold spores, cockroach droppings and rodent urine.
  • Can indoor allergen testing help with asthma or allergy symptoms?
    Yes, indoor allergen testing can help manage asthma and allergy symptoms. Testing can pinpoint specific locations and types of allergens present indoors, such as dust mites, pet dander, mold, rodents, or pollen. Knowing which allergens are present allows you to target your cleaning and remediation efforts more effectively. Once you know which allergens are causing problems, you can take steps to reduce or eliminate them. For example, if dust mites are a problem, you might use allergen-proof covers on pillows and mattresses, or if mold is detected, you can address moisture issues and clean affected areas. Better indoor air quality can reduce the frequency and severity of asthma and allergy symptoms.
  • What symptoms or signs indicate that indoor allergens might be a problem?
    Symptoms of indoor allergens in the home can vary depending on the type of allergen and the individual’s sensitivity. Common symptoms include: Sneezing: Frequent or chronic sneezing, often accompanied by a runny or stuffy nose. Runny or Congested Nose: Nasal congestion or a persistent runny nose. Itchy or Watery Eyes: Irritation, redness, or tearing of the eyes. Coughing: Persistent or frequent coughing, which can be dry or phlegmy. Sore Throat: A scratchy or sore throat, often from coughing. Wheezing: A whistling or wheezing sound when breathing, which can indicate asthma triggered by allergens. Shortness of Breath: Difficulty breathing or a feeling of tightness in the chest. Skin Reactions: Rashes, eczema, or hives that can be triggered by allergens like dust mites or pet dander. Fatigue: Feeling unusually tired or fatigued, which can be related to ongoing allergic reactions. Headaches: Frequent headaches or sinus pressure, which can be related to indoor allergens like mold or dust. If these symptoms are persistent or worsen over time, it may be worth investigating indoor allergens as a potential cause and consulting with a healthcare professional for proper diagnosis and management.

Other Services

We also offer sampling for lead, asbestos, formaldehyde, dust mite allergens, indoor allergens, PCR and ERMI mold testing, CO2 levels, ventilation effectiveness, HVAC duct inspections, and radon monitoring.

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Asbestos

People may be exposed to asbestos in their workplace, their communities, or their homes. If products containing asbestos are disturbed, tiny asbestos fibers are released into the air. If you breathe asbestos fibers, you may increase the risk of several serious diseases, including asbestosis, mesothelioma and lung cancer.

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Air Flow Measurements

 Assess the HVAC system performance by measuring the flow of air from duct outlets, verifying that each area of the space receives optimal ventilation. Achieve comfort, energy efficiency, and indoor air quality while ensuring that the airflow and environmental conditions within a building are properly distributed and maintained

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Radon

Radon is an invisible, odorless gas. You can't see radon. You can't smell it or taste it. But it may be a problem in your home. Radon is the second leading cause of lung cancer in Canada. You and your family can breathe in high levels of radon without knowing it.  When inhaled, radioactive particles can damage the cells that line the lung

Satisfied Clients

I am another highly satisfied customer!”
We thought we had a mold problem, but it turned out to be dust mite allergens.They were super helpful and did a great job at explaining the issues in a way we could understand.

Mike Frattura, Stittsvile, ON

“Best money I have ever spent!”
I struggled with coughing and breathing difficulties for almost a year. Justin pinpointed the problem area in my home and offered solutions to remedy it. I have never felt better. Thank you!

Margret, Orleans, ON

"They were very responsive, professional, and personable"
Very thorough and they even checked the HVAC vents. Excellent report and recommendations that really improved my air quality.

Earl Belliveau, Ottawa, ON

"Great company to use if you have mold or indoor allergies"
Very informative and friendly. Not only is the owner knowledgeable, he uses only the highest level of industry equipment 

Bashir Manji, Barrhaven, ON

How to test the air quality for mold spores?

The most common method for testing mold spores in the air is non-viable air sampling, also known as “spore trap analysis.”: This method involves collecting air samples using a pump that draws air through a spore trap or cassette. These traps capture airborne particles, including mold spores.

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Standard practice is to keep the windows closed for at least 24 hours before testing. The sampling equipment is typically positioned at breathing height. Samples should be collected from various indoor locations, including both areas of concern and control areas (areas not suspected of mold growth). An outdoor sample should also be collected to serve as a reference.

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Microscopic airborne spores are drawn into these cassettes, which contain a glass slide coated with adhesive. As the spores enter, they become embedded in the adhesive layer on the glass slide. The cassettes are then sent to an accredited laboratory, where they are microscopically analyzed by a trained environmental microscopist or mycologist.

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Testing for mold spores in the air allows professionals to assess the presence and concentration of mold in an indoor environment. This data helps pinpoint problem areas that are likely caused by condensation, moisture issues, or water damage. After identifying the source of the moisture problem, the necessary steps can be taken to remediate the mold growth and prevent additional indoor air quality issues.

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Satisfaction Guarantee

We establish a sampling plan based on what we identify during our inspection, taking into consideration your budget. 

2 hour on-site consultation with testing

Sampling for general indoor mold/fungi

Readings for TVOC and CO2 levels

Screening for bacteria/viruses & pollen

Fine particulate concentrations (PM 2.5)

Recommendations to improve your indoor air quality

InstaScope Inspection

549
$

4 hour on-site consultation with testing

Sampling for general indoor mold/fungi

Readings for TVOC and CO2 levels

Screening for bacteria/viruses & pollen

Fine particulate concentrations (PM 2.5)

Total airborne allergen & fungi testing

Fungal analysis for mold spore types

Test HVAC vents for mold, bacteria & PM

Radon monitoring & particle counts

Detailed report including measurements finding, conclusions & recommendations

Comprehensive Assessment

1,649
$
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Gravelle Building Environments Inc.

Operating Hours

Mon - Fri: 10am - 8pm ​​


Saturday: 10am - 5pm​
Sunday: 11am - 4pm

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Contact

Gravelle Building Environments Inc.
132 Copperwood Street
Orleans, ON

K1C 7S1​​

© 2025 Gravelle Building Environments Inc.

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