Radon Mitigation or Sealing Your Foundation: What’s the Right Choice for Your Ottawa Home?

If you live in Ottawa, protecting your home from radon gas should be a top priority. This invisible, odourless gas can seep into your home through the soil and foundation, increasing the risk of long-term health issues, including lung cancer.

Many homeowners assume that sealing cracks in the foundation is enough to solve the problem. While sealing plays an important role, it is not always a complete solution. Understanding the difference between foundation sealing and professional radon mitigation helps you make the right decision for your home and your family.

What Is Foundation Sealing?

Foundation sealing focuses on closing gaps, cracks, and openings where radon gas can enter your home. These entry points often include:

·       floor cracks in the basement

·       gaps around pipes and utilities

·       sump pump openings

·       floor-to-wall joints

Radon naturally moves from the soil into your home due to pressure differences, even through small openings. Sealing these areas helps limit how much radon can enter. It can also improve overall energy efficiency and reduce moisture infiltration.

However, sealing alone has clear limitations. Even well-sealed foundations are not airtight, and radon can still find its way indoors through porous materials or tiny gaps.

What Is Radon Mitigation?

Radon mitigation is a complete system designed to actively reduce radon levels inside your home. The most effective method used in Ottawa is Active Soil Depressurization.

This system works by creating controlled suction beneath your foundation, drawing radon gas away from your home and safely venting it outside before it can accumulate indoors.

Professional radon mitigation systems can typically reduce radon levels significantly, often bringing them down to near outdoor levels when properly installed. Unlike simple sealing, mitigation addresses the root cause by managing how radon travels from the ground into your home.

Key Differences Between Sealing and Mitigation

Understanding how these two approaches differ is essential:

Foundation Sealing

·       Passive solution

·       Reduces entry points but does not eliminate radon

·       Often used as a supporting step

·       Best suited for minor improvements or alongside mitigation

Radon Mitigation

·       An active system that removes radon gas

·       Targets the source beneath your home

·       Delivers consistent and measurable results

·       Recommended when radon levels exceed Health Canada guidelines

In most cases, sealing is used alongside a complete mitigation system rather than as a standalone solution.

Why Radon Deserves Attention in Ottawa Living Spaces

Ottawa is considered a higher-risk area for radon due to its geology. Studies suggest that a notable percentage of homes exceed Health Canada’s recommended limit of 200 Bq/m³, meaning mitigation is frequently necessary.

What makes radon especially challenging is that levels vary widely from one home to another, even on the same street. That means you cannot rely on assumptions or minor fixes. Proper testing and the right solution are essential.

Which Solution Is Right for Your Home?

The answer depends on your radon levels:

·       If your levels are low, sealing cracks can still be a smart preventative step

·       If your levels are elevated, sealing alone will not solve the problem

·       In most cases where action is required, professional radon mitigation is the safest and most effective option

Health Canada recommends taking action when radon levels exceed 200 Bq/m³, and mitigation systems are designed specifically to achieve that reduction.

Protect Your Home with the Right Solution

When it comes to radon, partial solutions can leave you exposed. Foundation sealing plays a supporting role, but it cannot replace a professionally designed radon mitigation system.

At O’Reilly Brothers Ltd, we provide reliable Radon Mitigation in Ottawa tailored to your home’s structure and conditions. Our team ensures that radon is not just reduced but effectively controlled for long-term safety.

Ready to improve your indoor air quality? Contact us today to schedule a radon assessment and discover the right solution for your home.