Radon - What you need to know

What is radon?

Radon is a radioactive gas that comes from the breakdown of uranium in soil and rock. It is invisible, odourless and tasteless.

When radon is released from the ground into the outdoor air, it is diluted and is not a concern. However, in enclosed spaces, like homes, it can accumulate to high levels and become a health risk.

How radon gets into your home

The air pressure inside your home is usually lower than in the soil surrounding the foundation. This difference in pressure draws air and other gases, including radon, from the soil into your home.

Radon can enter a home any place it finds an opening where the house contacts the ground: cracks in foundation floor and walls, construction joints, gaps around service pipes, support posts, window casements, floor drains, sumps or cavities inside walls.

Testing your home

There are two options for testing a house for radon:

• Purchase a do-it-yourself radon test kit
• Hire a radon measurement professional

If you choose to purchase a do-it-yourself radon test kit, choose an accredited lab in your local area and make sure you follow the instructions provided by the lab on how to set up the test. 

If you choose to hire a professional to perform the radon test, it is recommended that you ensure they are certified and will conduct a long-term test for a minimum of three months.

For more information about radon testing services, purchasing a radon testing kit or finding a radon measurement professional in your area, visit www.canada.ca/radon.

New home construction and renovation

The National Building Code - Alberta edition requires a radon consideration for all new construction projects. If you are adding to the footprint of your home, this may affect your renovation.

For more information about your construction or renovation project visit www.calgary.ca/myHome or ask a question via live chat.