Mobile homes and radon the skirt can trap soil gas
Many mobile homes have a space under the floor, closed by a skirt. If the skirt is tight and the floor is pierced around the plumbing, soil gas concentrates there and then enters the kitchen and the bedrooms. A home truly open to the wind, with no skirt, dilutes better. Sitting “on blocks” does not decide it.
The detector goes in the occupied room, at 0.8 to 2 m, not under the skirt and not in a storage compartment. A concrete-slab addition beside the mobile home is another building: test it separately if someone sleeps there.
Reference points: Health Canada, what you need to know about radon and the 200 Bq/m³ guideline. The two-year timeline between 200 and 600, and one year above 600, comes from Health Canada’s guide for radon measurements in homes.
The 4-day test gives a first reading. The 91-day test covers the three-month minimum Health Canada asks for. Both are $59 before tax: shipping, return and the laboratory are included, taxes extra. The PDF report is sent within 2 business days after the laboratory receives the detector.
Above 200 Bq/m³, mitigation is confirmed with a quote. Gaz Radon is C-NRPP certified for measurement and mitigation.
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