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Thank you for your interest in testing with the Evict Radon National Study

The Evict Radon National Study is a national research study involving researchers and scientific partners from across Canada who are dedicated to solving Canada’s significant and worsening radon-gas exposure problem. Radon is a substantial cause of lung cancer even in non-smokers. By testing your home with our at-cost, research-grade radon test kits and enrolling in our national, public university-based research study, you are helping researchers from across Canada to understand radon exposure and develop new ways to protect ourselves and loved ones.

Common practice stated that winter is the optimal time to radon test. However, as we collect more data, we have determined little difference between winter and spring radon testing. We do, however, encourage our participants to test over seasonal change. At this time, the best and most accurate radon readings obtained during the spring and summer months are those that are longer than 6 months. 

Radon Research Series

Engineer Out Radon

Radon Research Series


Solving high radon in a building, retroactively

Solving high radon in a building, proactively

In our 2021 study comparing Canadian and Swedish houses, we found that in an equivalent cold climate nation, high radon can be engineered out in a system wide manner. More specifically, while houses built from the 1950s to the 1970s in Sweden tend to contain higher radon versus those built in Canada in the same period. By the 1980s, houses built in Canada and Sweden were constructed with the same (relatively high) radon level. From then on, radon in new Swedish properties decreased, while the reverse occurred in Canada such that new Canadian homes are now built with and average of 467% higher radon levels compared to a new house built in Sweden. 

Comparing indoor air radon levels in Swedish and Canadian residential properties built from 1950 to 2020. 

What this data shows, is that radon can be engineered out of our built environment, including residential houses. Our goal is to gather the essential building, health and economic data needed to make a clear case to implement meaningful changes to the next Canada Building Codes (in 2025). By changing our building practices to fundamentally reduce the way houses capture and concentrate radon, we can protect everybody from the health risks of radon exposure.

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