Mould Services

Winnipeg Air Testing provides the following mould services to Winnipeg, rural Manitoba and northwest Ontario. We offer professional testing and assessments of mould problems along with practical advice to help home owners, landlords and building owners.

  • Mould Inspections / Investigations
  • Air Testing / Clearance Testing
  • Analysis of Bulk, Surface and Swab Samples
  • Testing of former grow-op houses
  • Expert Witness and Testimony mould-related issues
  • Servicing Residential, Commercial and Industrial

Prices for Residential Mould Testing

Moisture Survey with Infrared camera and Moisture Meter: $120 plus the GST

Testing for a one story house plus basement: $240 plus the GST (includes moisture survey)

Testing for two story house plus basement: $300 plus the GST (includes moisture survey)

Testing for Basement only or apartment: $180 plus the GST (includes moisture survey)

Payment is due at time of visit. Prices are valid in Winnipeg. For projects outside of the city, additional charges for travel time and mileage may apply. Rush and emergency (same day) turnaround time available for a 25% and 50% surcharge respectively. Former Gro Op clearance testing is also available.

Take Home Mould Test Kit

Just need a quick test? This kit provides a cheaper alternative to our full mould services.  Use our simple-to-use kit to test your home.  The kit includes everything you need such as a professional grade air pump and sampling media, timer and instructions to collect a professional sample. Normally one sample is collected at the area of concern or simply in the centre of your home. You can pick up the kit at our office, collect the sample, bring the sample and kit back to us and in few days receive the results of the test. The samples are analyzed to give you the number and type of moulds collected in the sample and the results are interpreted in an easy to read format.

The cost for one sample is $100.00 plus the GST. Add extra samples at a cost of $60.00 plus GST. These prices include the cost of sample analysis. Payment is due at the time the kit is picked up. Call for further information.

Health Effects of Mould

Moulds (spelt mold in the United States) may adversely affect human health through three processes: 1) allergy; 2) infection; and 3) toxicity. One can estimate that about 20% of the population has allergic antibodies to fungal antigens. Only a fraction of these would be expected to show clinical illness. Allergic responses are most commonly experienced as allergic asthma or allergic rhinitis (“hay fever”) and nasal and chest congestion. A rare, but much more serious immune-related condition, hypersensitivity pneumonitis (HP), may follow exposure (usually occupational) to very high concentrations of fungal (and other microbial) proteins.


Mould in a wall in a residential home.

Air Testing

Air testing for mould falls into two categories: viable and non-viable. Viable samples are cultured over a one week period to identify and count the mould colonies that grow during the incubation period. Non-viable testing measures the airborne mould spores and counts and identifies the types of mould spores. Non-viable testing is now the more common method of doing air testing because the results are available without the incubation period and thus are available quicker.

Air tests are taken by drawing air through a special cassette. Airborne particles including mould spores are deposited on a glass slide. The slide is later examined under a microscope allowing the number and type of mould spores to counted.

spore trap cassette

The image to the left shows how the mould cassette works. Air is drawn thorough the cassette. Airborne particles including mould are deposited on a glass slide.  The slide is later examined under a microscope where the types and number of each type of mould spores are counted.

differnt types of moulds

See how different types of moulds appear under a microscope. Alternaria is a common outdoor mould and its presence is not a problem. Stachybotrys is a problematic mould and its presence on an indoor sample is an indication of a mould problem in a building. Of course, there are many types of moulds and these images are examples of how moulds appear under a microscope.

All testing is done under the supervision of a Certified Industrial Hygienist (CIH) with at least 30 years experience and who has been accepted as an expert witness in a court of law.

Development and Inspection Services of  Mould Abatement Projects

Winnipeg Air Testing will develop remediation plans and specify the needed steps to remove the mould. This includes the areas and procedures to remove the mould fully and safely without contaminating adjoining areas. We also perform project management, inspection services and clearance testing at the end of the project to show that it was done right. Mould removal in residential and commercial buildings is also available.

Mould Abatement

Mould Abatement

Analysis of Bulk and/or Swab Samples

Samples of materials that are suspected of being mould can be analyzed to determine if in fact it is mould. The sample can be an actual piece of the materials (e.g., a small piece of drywall) or a swab or tape lifts sample taken from an object or surface. The sample is then analyzed for mould. The cost for this service depends on the number of samples to be analyzed and the required turnaround time that the results are needed.

Building Inspections for Mould / Water Intrusion

Sometimes mould is suspected in a building or residence. A home might have been used as a grow op, have a history of water intrusion, or is being considered as a real estate transaction. A thorough mould inspection of a home involves a visual inspection looking for signs of both mould and water damage/intrusion into the building. Signs of water damage are sometimes visible but sometimes moisture is hidden inside where the naked eye can’t see it. Fortunately, there are tools to find hidden moisture.

Infrared Camera

An infrared camera is used as part of the mould inspection. A wall that has moisture inside of it is somewhat cooler than a dry wall. An infrared camera can see temperature differences from moisture in walls and other building materials. This lets us see the moisture inside the wall.

The naked eye can’t see moisture in the ceiling (left) but an infrared camera can detect the lower temperature caused by the presence of the water (right).

Water leak at the base of a toilet caused by a failed wax ring.

Moisture Meter

Once the source of the water has been identified, the moisture content of the building material can be determined using a moisture meter. A moisture meter measures the water content in walls, flooring and other building materials. High levels confirm the presence of water leaks or water intrusion behind the wall. It lets you measure the presence of water in the wall without damaging the paint. Finding the moisture prevents water staining, water damage and the conditions that mould need to grow.

Winnipeg Air Testing Field Investigator

Our staff have 40 years of combined experience which includes the following qualifications:

  • Former government inspector with Manitoba Workplace Safety and Health Division
  • Canadian Registered Safety Professional
  • Certified Industrial Hygienist
  • Registered Occupational Hygienist
  • Accepted as an Expert Witness on mould in Manitoba’s Court of Queen’s Bench

Some jurisdictions require that certain types of mould testing, such as in former grow-ops, be performed by a Certified Industrial Hygienist (CIH) or a Registered Occupational Hygienist (ROH).  Also, in real estate transactions, insurance claims and legal action, the qualifications of the investigator may be crucial. You should ensure that the person doing your mould testing has the necessary credentials.

Winnipeg Air Testing would be pleased to help you with your mould problem or to answer any questions you may have on mould or mould testing. For a free consultation, please contact us if you have any questions.