What is Radon?
Radon is a naturally occurring radioactive gas that forms from the breakdown of uranium in soil, rock, and water. It seeps into homes through cracks in foundations, gaps around pipes, and other openings. Because it is colorless, odorless, and tasteless, radon can accumulate in indoor spaces without detection, posing significant health risks.
The Health Risks of Radon Exposure
Radon and Lung Cancer
Exposure to elevated radon levels is a leading cause of lung cancer among non-smokers. According to Health Canada, radon exposure is responsible for approximately 16% of lung cancer deaths each year. Smokers who are also exposed to radon have an even higher risk of developing lung cancer.
How Common is Radon in Canadian Homes?
Health Canada’s National Radon Survey found that up to 44% of homes in certain regions exceed the recommended radon guidelines. While most testing has been conducted in residential properties, radon is also present in workplaces, schools, and commercial buildings.
Radon and Building Codes in Canada
National Building Code Requirements
The National Building Code of Canada includes specific measures to facilitate radon mitigation in new constructions. These provisions make it easier to install a full mitigation system if post-occupancy radon testing reveals high levels.
Key Building Code Requirements:
- Gravel layer under the foundation slab to allow for soil gas movement.
- Sealed slab edges to minimize radon entry.
- Sealed sump pits to prevent gas infiltration.
- A well-sealed foundation membrane around all posts, entry points, and structural components.
- A rough-in pipe for future radon mitigation system installation.
Important Considerations for Homeowners
While these building measures are valuable, they do not fix radon on their own. If radon levels are high, a mitigation system must be activated by a C-NRPP-certified Radon Professional. Homeowners should:
- Test their homes for radon after moving in.
- Ensure that builders follow code-compliant construction practices.
- Be aware that code compliance alone does not guarantee radon safety.
Protecting Low-Income Canadians from Radon Exposure
Ensuring that all Canadians have access to radon-safe homes requires additional measures, including:
- Grants and low-interest loans to help homeowners afford radon mitigation.
- Mandatory radon testing for rental properties before landlords receive a rental license.
- Amendments to workplace safety laws to require radon testing in commercial spaces.
How to Reduce Radon Levels in Your Home
Testing for Radon
The only way to know if your home has high radon levels is to conduct a radon test. Short-term and long-term radon test kits are available, but Health Canada recommends a long-term test (at least 90 days) for the most accurate results.
Professional Radon Mitigation
If testing reveals radon levels above the recommended limit (200 Bq/m³), mitigation is necessary. A certified radon professional can install an active radon mitigation system, which typically involves:
- A ventilation system to redirect radon gas safely outside.
- Sealing cracks and gaps to prevent radon infiltration.
- Installing a sub-slab depressurization system to draw radon away from the home’s foundation.
Take Action Today
Radon is a serious but preventable health risk. Protect your family by:
✅ Testing your home for radon.
✅ Ensuring builders follow radon mitigation guidelines.
✅ Advocating for stronger enforcement of building codes and workplace protections.
Need Professional Radon Testing or Mitigation?
Contact Alder Creek Radon Gas Pros for expert radon testing and mitigation services. Ensure your home is safe and radon-free!
