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6 Common Radon Myths Debunked
Reading time: 4 minutes
Safety
This article was originally published in May 2019 and has been updated to reflect current information.
Radon is a natural gas that can seep into homes, but misconceptions about how it enters, how dangerous it is, and how it can be managed are widespread. The root cause of these myths is a lack of awareness. Our radon mitigation experts are here to clear up some of the most common misconceptions about radon and offer guidance to homeowners in Canada.
Myth #1: I've Lived in my Home for 30 Years and Never had Any Issues
Radon is responsible for approximately 3,000 lung cancer deaths annually in Canada. Many people believe that if they haven't had issues with radon in the past, they’re safe. However, radon exposure accumulates over time, and long-term exposure significantly increases the risk of lung cancer, particularly for people who smoke or have other respiratory conditions.
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Myth #2: If a Home has High Levels of Radon, I’ll be Able to Detect it
This radioactive gas is odorless, tasteless and colorless. Unlike other gases like carbon monoxide that have a distinct odor, radon is essentially undetectable to our senses.
While some may use short-term test kits to check for radon levels, these methods provide only a snapshot of a few days, which may not reflect the true levels. Radon fluctuates over time, and short-term tests may capture a period when radon levels are unusually low. To get more accurate, reliable readings, we recommend using continuous indoor air quality (IAQ) monitors. These devices provide real-time data, enabling you to track radon levels consistently and identify any fluctuations or spikes in exposure over time.
Myth #3: Radon Levels Are Affected by Outdoor Conditions
Radon levels are primarily influenced by factors inside your home, not the weather outside.
While outdoor conditions like temperature, wind, and air pressure can influence the movement of radon in the environment, the concentration of radon inside your home is what matters most. Radon enters buildings through cracks in the foundation or other openings, and its levels are determined by factors such as the soil composition and permeability beneath your home, as well as the ventilation and sealing of your living space. Therefore, even if outdoor conditions change, indoor radon levels can remain high, making it important to regularly test for radon indoors to ensure a safe living environment.
Myth #4: Radon is only an issue in certain kinds of homes
Some believe only tight homes with basements are susceptible to radon. In reality, all homes—old, new, drafty, insulated, with or without basements—are at risk.
Radon comes from uranium breakdown in soil. Any home built on soil has the potential for infiltration.
New-construction homes are also at risk. Although building codes in nine U.S. states require radon-resistant new construction (RRNC), compliance varies widely. In Canada, provincial building codes also differ. For example:
Ontario requires radon mitigation measures in areas with high radon potential, per the Ontario Building Code.
British Columbia includes provisions for radon-resistant construction in certain regions.
In Quebec, building code updates emphasize radon risk assessments and preventive measures.
Without standardized enforcement, new homes in both Canada and the U.S. may lack adequate radon protection.
Radon comes from the natural decay of uranium in the ground. No matter what type of foundation your home rests on...it will have direct contract with the ground and will exposed to radon. (link)
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Myth #5: My neighbor’s home has low radon levels, so mine probably does too.
Factors that affect radon levels, such as soil composition and ground permeability, are specific to each home’s plot of land. While it’s reasonable to assume that neighboring homes might share similar soil and permeability, this isn’t always the case.
Additionally, the duration of a radon test and the season in which it is conducted can lead to varying results. For example, radon levels often fluctuate due to changes in temperature and air pressure, which can influence the rate at which radon enters a home.
Myth #6: Once you have a radon mitigation system, you don’t need to test it again.
Radon mitigation systems are designed to consistently maintain low radon levels when properly installed and functioning. The radon fan—a critical component—has an average lifespan of 5-10 years and may need replacement during that time. Regular inspections ensure the system continues to operate effectively.
Radon levels can vary due to factors like changes in home ventilation or ground conditions, so periodic testing remains essential. It’s recommended to test a home’s radon levels every two years to confirm the mitigation system is performing as intended and to ensure the safety of all occupants. This ongoing testing should be maintained indefinitely to address any potential changes in radon infiltration or system performance.
Broader Implications of Radon Exposure and Indoor Air Quality
Radon is just one of many factors affecting indoor air quality. Other pollutants, such as volatile organic compounds (VOCs) from paints and cleaning products, Co2 or mold, can also pose health risks. Addressing radon exposure is one part of a larger effort to ensure a safe and healthy home environment.
Homeowner Action Steps
To better protect your home from radon, consider the following steps:
Conduct Regular Testing: Use a reliable radon testing kit or hire a professional to assess your home.
Choose a Qualified Mitigator: If high levels of radon are detected, select a certified radon mitigator to install a mitigation system. Ensure they are experienced and have good reviews. Visit AARST certified website to find a professional.
Stay Informed: Keep up to date with local building codes and state regulations regarding radon-resistant construction practices.
All in all, education is key to the fight against radon. People who don’t know or are misinformed about the risks of radon don’t take preventive measures; those who do know, test.
Learn more about Fantech’s series of radon mitigation solutions for proper protection.
Sources
Health Canada (2023). Radon and Health.
Canadian Environmental Law Association (2023). Radon in Canada: Understanding the Risk.
Canadian National Radon Proficiency Program (C-NRPP) (2023). Radon Mitigation and Testing.
World Health Organization (WHO) (2021). Radon and Health.
Radon Awareness Canada (2023). Radon in Canadian Homes: What You Need to Know.
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