Why Professional Radon Testing in Calgary Is Essential This Winter

The moment the first hint of frost graces the Alberta countryside, it's time to stash away the summer attire. It's time to stash away the summer attire, unearth the winter coats, make sure the heating system is running efficiently, and carefully seal any gaps and crevices that could let in frigid air. However, in the process of battening down the hatches, many unsuspecting households also unintentionally invite a silent, invisible, yet very real winter resident, Radon gas.

How Radon Enters Homes and Why It Matters

It's a colourless, odourless, naturally occurring radioactive gas that arises from the slow breakdown of uranium in soil. In Calgary, it poses a far greater risk than many realize, and here’s why: as we seal our homes tight to fight off the harsh prairie chill, we simultaneously create an ideal environment for this gas to accumulate to levels that should not be ignored. For any homeowner who has never given a second thought to the quality of the air circulating within their living space, this is precisely the moment to start considering it seriously.

Geology Behind Calgary's Radon Risk

Calgary is built on a complex and ever-shifting geological foundation, comprising a blend of sedimentary bedrock and the rich glacial till that’s so prevalent in this region of Canada. What’s less known is that beneath our feet lies a geological environment, a complex interplay of soils that facilitates a constant yet imperceptible exchange of gases. When uranium in the earth breaks down, it naturally releases Radon gas, a radioactive gas that rises.

Calgary’s Geology and Its Impact on Radon Levels 

The specific geological makeup of Calgary means that numerous residential neighborhoods are prone to harboring naturally higher concentrations of Radon. It’s less about the age or construction quality of a house and more about how a particular plot of land interacts with the home’s foundation. Understanding this fundamental aspect of the local geology is the very first step in regaining control over your home’s environment.

Understanding the Winter Stack Effect

This negative pressure draws soil gases into the home through the cracks in the foundation, sump pits, and floor drains. This is called the stack effect. This is why winter is such an important time to have a Radon test conducted in Calgary! We spend a lot more time inside our houses with windows closed, which could increase our overall exposure. 

Home Radon Inspection vs. DIY Radon Tests

It might seem easy to pick up a home Radon sensor at your local hardware store, but a certified professional will provide a more complete picture than just a number. Professional home Radon inspections involve more than just sticking a monitor on a shelf; the certified home inspector will investigate the entire house’s building envelope, examine the home's ventilation and HVAC systems, find potential Radon gas entry points that a typical homeowner may miss, and follow specific testing guidelines recommended by Health Canada that follow Health Canada's recommended 90-day testing protocol for accurate assessment.

Key Insights

• Radon is responsible for almost a third of all cases of lung cancer among non-smokers in Canada.

• Individuals concerned about Radon exposure can learn more by consulting Health Canada’s Radon resources. Because of the ‘stack effect,’ a house is more vulnerable to gas intrusion during the winter than at any other time, making it an excellent time to test.

• A long-term 90-day average test result is the best measure for assessing potential risks, far better than a single “short-term test.”

Frequently Asked Questions

Is there a problem with Radon in Calgary?

The answer is yes. Although it is tempting to assume that these problems are isolated to ‘somewhere else,’ surveys of geology in Calgary neighborhoods have identified several with increased Radon levels, and Radon remains a problem throughout Alberta and across the nation.

Can I use inexpensive home monitors from the hardware store?Some home monitors are useful for preliminary screening, but the decision about whether Radon in the home warrants action should always be made based on Health Canada’s Radon testing protocol. The inspector determines the appropriate location for testing, how long testing will run, how to interpret the results, and the plan for next steps.

Does a Heat Recovery Ventilator (HRV) system eliminate the need for professional mitigation?Although an HRV does an excellent job of ensuring overall home air circulation, it is not designed to address Radon Gas intrusion into the home. If you have an elevated level, a home with a system that promotes Active Soil Depressurization will physically move Radon Gas from under the house.

How long should I actually leave my Radon test for?

Health Canada’s guideline for Radon testing in homes recommends a minimum of 90 days. Factors like barometric pressure and indoor usage can influence a Radon Test result, and the long-term average exposure within your home is a long-term test. 

If the result is high, what is the Canadian action guideline?

Health Canada recommends taking action when Radon levels reach or exceed 200 Bq/m³. The guidelines state that action should be taken within 2 years, but many people choose to act at levels below 200 Bq/m³, aiming to lower them as far as is reasonably achievable.

Will it be enough just to seal the cracks in my basement?

Sealing may help reduce the entry of Radon Gas to some extent, but it rarely eliminates it. Radon Gas seeps into homes as it travels along the path of least resistance through pores in concrete and soil; a mitigation system is needed to redirect the flow away from living areas.

What is happening with the Radon policy in Alberta?

There is a general move toward tighter new building codes. Building codes continue to evolve to improve Radon protection in new homes, with increasing emphasis on Radon rough-ins and construction practices that support future mitigation, where required, to reduce the risk of Radon entering indoor spaces.

Conclusion

Maintaining your home is much like maintaining your vehicle- homeowners take a peek to check the basics since they know it keeps the family safe, as well as preserving their investment. The process should feel just like vehicle maintenance: conducting Radon testing to ensure truly safe indoor air, especially during Calgary's winter months, and staying cozy in the house most of the time. For results that fall outside the standard, professional mitigation is a well-known, standard protocol in Canada. Don't postpone Radon testing and act to secure your family’s health today. Contact us today to begin a Health Canada-recommended 90-day Radon test.