Autumn and winter are good times to check indoor radon levels. Radon is a naturally occurring radioactive gas found in soil and rocks; because it is odorless and colorless, indoor concentrations cannot be determined without testing.
Health Canada recommends long-term monitoring. Taking measurements for at least three months during the fall and winter, when windows are kept closed for longer periods, helps estimate the annual average exposure level.
- It is recommended to place the detector on the lowest floor of the house where you spend more than 4 hours a day.
- The Canadian standard is 200 Bq/m³. If long-term test results are higher than this, mitigation measures must be considered.
- DIY testing kits are available through the Take Action on Radon guide, and if you entrust the task to a professional, please check for certification under the Canadian National Radon Certification Program (C-NRPP).
- You cannot assume that your home will be low just because a neighbor's result is low. Since soil and foundation structures vary from house to house, an on-site inspection is necessary.
If you start the test in October, you can check the results within the winter, giving you time to plan for spring home repairs or ventilation. Please record the start and end dates of the test, and do not forget to send the detector to the laboratory according to the instructions once the period is over.
Source: Health Canada — Radon Reduction Guide for Canadians
|
