Invisible, Odourless, and Dangerous
Radon isn't something most people think about when buying a home, yet it's one of the most serious hidden risks indoors. It's a radioactive gas that seeps through small cracks and openings in foundations. You can't see or smell it, but it's the second leading cause of lung cancer in Canada.
The only way to know your home's radon level is to test it. Even houses built side by side can have completely different readings.
How Testing Works
Testing takes between 48 and 72 hours using continuous electronic monitors placed on the lowest level of the home where people live. The home stays closed for 12 hours before and during the test, which helps get a reliable reading.
During each test, we measure:
- Hour-by-hour radon levels in Bq/m³
- Overall averages compared to the Health Canada guideline of 200 Bq/m³
- Conditions that could affect readings, like ventilation or foundation type
- Any unusual spikes during the test window
You'll receive a detailed report within 24 hours after the test concludes, including clear results and practical steps if the levels exceed 200 Bq/m³.
A Real Example
I once tested a modern home with no signs of issues — clean basement, new construction, well-sealed windows. The results came back at 280 Bq/m³. The buyers installed a basic mitigation system, and the follow-up reading dropped to 40. Problems like this are easy to fix once you know they exist.