Radon Testing
Professional Radon Testing for Homes and Buildings
Radon testing is the only reliable way to understand your home's radon level. RBM provides professional testing with CNRPP-guided monitor placement and clear written results.
Radon readings become clear when you test.
Testing gives homeowners a measurable starting point and helps confirm whether mitigation is needed.
BeforeAfterExample radon monitor readings before and after mitigation. Results vary by building.
Why placement matters
Incorrect Placement Can Produce Misleading Radon Readings
Where a radon monitor is placed significantly affects what it measures. CNRPP placement guidelines exist to ensure results reflect the actual radon level in the living areas of the home — not an unusually high or artificially low reading.
- Placed in the lowest livable area of the home
- Kept away from kitchens, bathrooms, and laundry areas
- Kept away from windows, doors, and ventilation openings
- Not placed in storage rooms or utility spaces
- Positioned to capture a realistic sample of living-area air
Testing options
Short-Term Testing
Snapshot result — 2 to 7 days
Short-term tests provide a quick indication of radon presence and can be useful for initial screening or time-sensitive situations such as real estate transactions. Results reflect conditions during the test period only.
Long-Term Testing
Health Canada recommended — 90+ days
Long-term testing over 90 days can better capture seasonal changes in radon concentration and ventilation patterns. Health Canada recommends long-term testing as the most accurate approach for understanding annual average exposure.
RBM can help with professional placement and testing strategy. For official federal guidance, review Health Canada radon information.
After your test
Results Explained, With a Clear Path Forward
Results explained clearly
RBM reviews your results and explains what they mean in the context of Health Canada guidelines and your home's specific conditions.
Written recommendations
If levels are within an acceptable range, RBM will say so. If elevated, a written recommendation outlines available next steps.
Mitigation path if needed
If radon levels indicate mitigation is appropriate, RBM designs a custom system suited to your home's foundation, layout, and conditions.
Book professional radon testing today
Same-day response. Written results. No deposit required.
Who should test
Homeowners who have not yet tested their home
Buyers and sellers during real estate transactions
Homes with basements, crawlspaces, or slab foundations
Airtight or recently renovated homes where natural ventilation is reduced
Families with young children or members sensitive to air quality
Anyone who has received an elevated short-term radon result
Take the first step
Get Professional Radon Testing Across Southern Ontario
RBM uses professional-grade diagnostics to measure what is happening inside your home, then recommends targeted solutions based on real data.