Healthy Home: A Guide to Radon Exposure

Healthy Home, Real Estate

Protect your family by knowing all there is to know about the dangers of radon exposure.




When you imagine your dream home, you likely focus on location, housing type, layout and finishes. How about imagining yourself thriving and healthy between the walls that comprise your home? It goes without saying, that that is a crucial part of the picture, but there is an element of homeownership that supports that.

We spend a lot of time, when securing a home, focusing on the things that you can see. What about the things that you can’t see?

And we’re not talking about what’s between the walls. We’re talking about the air you, your family and friends breathe within the walls.

Specifically, we are talking about radon exposure. Here is an excellent resource from the Canadian Real Estate Association (CREA) that provides comprehensive information about radon.


What is radon exactly?

Radon is defined as “a radioactive gas that is odourless, colourless, and tasteless. It is produced by the breakdown of uranium found in sediment (soil), rocks, and water. When radon is released into the atmosphere it gets diluted and poses negligible risk to human health.”

Radon exists throughout Canada, but can vary from area to area, depending on the composition of the bedrock or sediment upon which a house is built.

Between 2009 and 2011, Health Canada conducted a study on radon concentrations at a representation of 14,000 homes across the country. Results from the study showed that seven percent of these homeowners were living with high levels of radon and that radon levels vary widely in different geographical regions.


What are the implications?

What you may not realize, is that as radon is a naturally occurring gas in the atmosphere, it is automatically present in your home. While lower levels of radon pose no threat to your health, higher levels can be very dangerous. This effect can be compounded when the air in question is indoors. If it accumulates, then the danger increases.

Radon, when inhaled in larger quantities, remains in the lungs and causes decay, and eventually can contribute to cancer (Radon is the second leading cause of lung cancer and it is estimated that 16 per cent of lung cancer deaths among Canadians are attributable to indoor radon exposure, according to Health Canada).

This is why Health Canada recommends that homeowners get their homes tested for radon exposure.


How does it get into my house?

Like we said, radon naturally occurs from the sediment, soil and bedrock upon which your home is built. It can creep in to your home through cracks in the foundation or floors as well as through gaps around service pipes, window casements, sump pumps and generally where the seal between house and nature is not airtight.

New home construction now requires design and construction elements that are meant to impede radon from entering the home. However, these are not foolproof, which is why Health Canada recommends that everyone test their residences, regardless of their age.


How do you test for radon?

You can’t see, taste or smell radon, so you need to employ other mechanisms. You can either purchase a do-it-yourself kit, or employ a certified radon professional.

Because levels of radon vary over time, it is recommended that you test for a three month period to ensure and accurate reading.  For information on the do-it-yourself radon test kits, contact Health Canada at or 1-866-225-0709. These kits retail for around $25-$75. Certified Radon professionals can be located through

According to Health Canada, remedial action should be taken if “the average annual radon concentration exceeds 200 becquerels (which is the unit of measurement scientist use to measure the concentration) per cubic metre (200 Bq/m³) in the normal occupancy area. The higher the radon concentration, the sooner remedial measures should be undertaken.”


For most, homeownership is one of the most rewarding experiences that exist. Pride of ownership, along with the opportunity to throw down roots and express yourself within your own walls really is unparalleled, but what this underscores too is the responsibility that goes along with that pleasure.

At we look at your home ownership experience from all the sides and provide you with comprehensive, thoughtful support. We’ve got your best interests as a homeowner in our sights always. That's why we were thrilled to hear that our Guide To Radon Exposure is already garnering positive attention on Twitter! Thanks,!

Check out our past blogs for further important information like this, including The Search For A Healthy Home and What are the Real Financial, Emotional and Health Costs of Commuting? With a multi-disciplinary education in housing and decades of experience in the Toronto housing market, Urbaneer is here to help!

~ Steven and the urbaneer team

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