Radon is a naturally occurring radioactive gas released from the breakdown of uranium in soil and rock — and Ottawa's geology makes it a real concern for local homeowners. Areas like Kanata, Stittsville, and Carp sit on exposed bedrock that can funnel radon up through foundation cracks, sump pits, and floor drains into the living space above.
You can't see, smell, or taste radon, so the only way to know your level is to test. Health Canada recommends action when indoor radon exceeds 200 Bq/m³, and many Ottawa homes measure well above that. Our radon mitigation systems use sub-slab depressurization (SSD) to draw the gas from beneath your foundation and vent it safely outside — before it ever enters your home.
A properly installed radon mitigation system can reduce indoor radon by up to 99%, bringing your home well below the action level. Every system we install includes post-installation verification so you can see the difference in writing.
A Local Challenge We Understand
Ottawa's mix of Canadian Shield bedrock in the west and clay/Leda soils in the east creates uneven but consistently elevated radon risk across the city. Health Canada's cross-Canada survey found that a meaningful share of Ottawa-area homes exceed the 200 Bq/m³ guideline. Older foundations in neighborhoods like the Glebe, Westboro, and Centretown — with their hairline cracks and unsealed sumps — are especially vulnerable to radon entry.
What You Get
The benefits our Ottawa customers see from this service.
How It Works
A clear, step-by-step process — no surprises.
Free radon assessment
We review your home's foundation, test history, and radon entry points, and recommend whether a mitigation system is right for you.
System design
We locate the ideal suction point, plan the pipe routing, and choose a fan sized to your home's sub-slab conditions.
Installation
A small core is drilled through the slab, a PVC pipe and radon fan are installed, and the exhaust is vented above the roofline.
Post-installation testing
We verify the system is drawing properly and provide a radon test to confirm levels have dropped to a safe range.
Ottawa radon services we provide
Searches Ottawa homeowners use to find this service — and what we deliver.
Frequently Asked Questions
Straight answers to the questions Ottawa homeowners ask us.
How much does radon mitigation cost in Ottawa?
A standard sub-slab depressurization system in the Ottawa area typically ranges from $2,500 to $4,500 depending on your foundation type, the number of suction points needed, and the exhaust routing. We provide a fixed quote after your free assessment.
Does radon mitigation really work?
Yes. Sub-slab depressurization is the proven, Health Canada–recommended method. A properly installed system reduces indoor radon by up to 99%. We include post-installation testing so you see the result in writing.
How long does installation take?
Most radon mitigation systems are installed in a single day. You can stay in your home during the work.
Will the fan run all the time?
Yes — the radon fan runs continuously and quietly to maintain low pressure under your slab. It uses about the same electricity as a light bulb. A system monitor on the pipe tells you it's working.
Do I need to test before installing a system?
Ideally, yes. If you haven't tested, we can set up a radon test first. If your results are above 200 Bq/m³, mitigation is recommended. We can also install a system preventively during a renovation.