Radon is a radioactive gas that is colourless, odourless and tasteless. Radon is produced by the breakdown of uranium, a naturally occurring material found in soil, rocks and groundwater. When radon is released from the ground into the air, it is diluted to low concentrations and is not a concern. However, in enclosed spaces, like houses, it can sometimes accumulate to high levels, which can be a health risk. The only way to know is to test for its presence.

For more information on testing your home for radon and reducing radon levels in your home, refer to the Health and safety considerations for energy-efficient renovations section of our website.