What is radon?
Radon is a naturally occurring radioactive gas, colourless, odourless and tasteless, produced by the breakdown of uranium in soil and rock. It enters buildings through cracks, joints, gaps around pipes, sumps and drains.
Is radon dangerous?
Yes. According to Health Canada, radon is the leading cause of lung cancer after smoking, and about 16% of lung cancer deaths in Canada are linked to it.
What radon level is acceptable?
Health Canada’s guideline is 200 Bq/m³. Between 200 and 600 Bq/m³ it recommends fixing within 2 years; above 600 Bq/m³, within 1 year.
How long does a radon test take?
A reliable test lasts at least 3 months, ideally during the heating season. A short test only gives an indication.
How much does a radon test cost in Laval or Montréal?
At Bouclier Radon: real estate test $225 + tax, long-term test with report from $300 + tax, engineer diagnostic $680 + tax.
How much does radon mitigation cost?
Active soil depressurization typically costs $1,800 to $5,000 + tax depending on the building, and reduces radon by about 90% or more.
Is my new home protected from radon?
Since 2022, and everywhere in Québec since July 2023, the Construction Code (9.13.4) requires a sub-slab membrane, a granular layer and a capped pipe labelled RADON. Only a test tells you whether that pipe needs to be activated.
Can a buyer require a radon test?
Yes. A buyer can require a test of at least 3 months, and an amount can be held back to fix a level above 200 Bq/m³.
Are there grants for radon mitigation?
Depending on eligibility: Habitation Durable, some municipal programs and the Lung Association’s Healthy Lungs program, with a long-term test above 200 Bq/m³.
Which areas do you serve?
Laval, Montréal, the North Shore and surrounding regions, in English, French and Arabic.