What is radon? 

Radon is a colorless and odorless radioactive gas from the decomposition of radium and uranium in the soil. It is considered the second leading cause of lung cancer after smoking by Health Canada and the Ontario Lung Association. In the open, it is not a risk. However, by infiltrating building enclosed spaces, concentration can pose a risk to people's health. How does radon infiltration happen? Cracks in foundations or in the concrete slab in a basement, through punctures of any kind in the foundations and in the slab and foundation joints in concrete blocks or jointed stones or a clay basement without vapor barrier. 

How do I know if there are radon hazards in my home? 

Only measurements using appropriate equipment can determine the level of radon. The radon level is measured in becquerel per cubic meter (Bq/m3). In Canada, when the level is above 200 Bq/m3, mitigation measures must be taken for the health of occupants 

Targeted locations should be rooms where people spend more than 4 hours a day. There is no point in taking a radon measurement for locations where people spend a small amount of time like a laundry room in the basement. 

How to take a measurement? 

Health Canada recommends taking measurements over a minimum period of three months, ideally over twelve months. The preferred period is from October to April. The winter months when we least ventilate our homes are the ideal time. The longer the measurement period, the more precise the result will be. 

Knowing that during a building purchase, this issue may be of concern to any prudent buyer, we offer the possibility of making a short-term measure. A 48-hour sampling is feasible to obtain preliminary information. However, these preliminary results should always be validated by a long-term measure. 

For more information, we recommend the following sites dealing with the subject: 

Our rates vary depending on the location, the distance and whether the service is rendered during the inspection or not. Please contact us for more details.