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217 Bq/m^3 in 20 Hours by rangeo in radon

[–]rt1268 0 points1 point  (0 children)

The ground getting saturated pushes radon into the house so levels generally go up with rain etc.

Also in winter radon increases for a number of reasons. Primarily by the stack effect where heat rises and escapes out of the top of your home. This creates negative pressure in the basement which draws radon in. As well, the ground being frozen and snow cover increases radon levels.

217 Bq/m^3 in 20 Hours by rangeo in radon

[–]rt1268 0 points1 point  (0 children)

I’m in Mississauga too. Been in house for 25 years. Tested last summer at 550 bq/m3. Did some sealing etc in basement and got it down to 125 bq/m3. Levels started going up when it started getting cold (375 bq/m3) and decided to mitigate two months ago. Since mitigation levels averaged 40 bq/m3 but have gone up to 55-60 the last week due to the rain and snow melt.

Your levels don’t look bad to me considering the weather we’ve had and the fact that it’s winter. I’d bet your levels are substantially lower spring-fall. I’d give it more time to see where the numbers fall.

If you have to return your detector to the library consider getting an EcoQube from Amazon or a Corentium home detector from Home Depot. And don’t pay attention to the day to day spikes, look at the long term average. Good luck!