Best Radon Testing & Mitigation in Rimouski

About Radon in Rimouski, Quebec

Last updated: March 2026

Rimouski is served by C-NRPP certified radon professionals listed on RadonFinder.ca. Quebec's radon risk is concentrated in regions underlain by the Grenville geological province, including the Laurentians, Eastern Townships, the Outaouais, and parts of Mauricie, where uranium-bearing gneiss and granite produce elevated soil gas. The Montreal urban area, sitting on the St. Lawrence Lowlands, generally shows lower levels. Quebec has a high proportion of older housing stock in cities like Quebec City and Trois-Rivières, and older construction with block foundations and open sump pits tends to allow more radon entry.

Typical Mitigation Cost in Quebec

$2,200–$3,600

Near national average

Montreal-area labour rates apply in the urban corridor; rural and Laurentian regions may see higher costs due to contractor travel.

•Foundation type: block, poured concrete, or stone foundations in older Quebec homes
•Open sump pits and floor drains as radon entry points
•Finished vs. unfinished basement: finishing adds pipe-routing complexity
•Bilingual service availability in some rural areas
•Age of home: pre-1980 homes often require more sealing work

Showing 1–2 of 2 professionals in Rimouski

Le Groupe Gesfor Poirier, Pinchin, Inc.

Rimouski, QC

5.0(1)Google

Le Groupe Gesfor Poirier, Pinchin, Inc. is a C-NRPP certified radon testing and mitigation professional serving Rimouski, QC and across QC. They offer complete radon solutions from initial testing through to mitigation system installation.

TestingMitigation

(418) 750-7165Call View Profile

Le Groupe Gesfor Poirier, Pinchin, Inc.

Québec, QC

4.5(6)Google

Le Groupe Gesfor Poirier, Pinchin Inc. (Head Office) is a C-NRPP certified radon testing professional serving Quebec, QC and across QC. Their certified inspectors provide accurate radon measurements for homes and businesses.

MitigationTesting

(418) 681-1999Call View Profile

Local radon data

How common is high radon in Rimouski?

Moderate

1 in 6.6

homes in the Rimouski area are estimated to have radon above Health Canada's action level of 200 Bq/m³. Your home can be very different from its neighbours, so the only way to know your level is to test.

Rimouski

1 in 6.6

Quebec

1 in 5.3

Canada

1 in 5.6

Postal areas nearby with the highest estimates

Estimate across 3 postal areas. Source: the RadonFinder.ca radon map of Canada, built on the 2024 Cross-Canada survey, Health Canada data and Statistics Canada census data.

Open Rimouski on the radon map

Test before you call a pro

Know your radon level in Rimouski first

A home monitor tells you whether you need mitigation at all, and later confirms it worked. Health Canada bases decisions on a 3-month average, ideally through winter.

Best Overall

Airthings Corentium Home

~$170–190 CAD C-NRPP tested

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Newest Model

Airthings Corentium Home 2

~$230–250 CAD

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Frequently Asked Questions: Radon in Rimouski

RadonFinder.ca lists C-NRPP certified radon testing and mitigation professionals serving Rimouski, Quebec. Browse the directory above to compare professionals by services offered, certifications, and reviews.

Most homeowners in Quebec pay between $2,200 and $3,600 for a complete radon mitigation system. Actual cost depends on your foundation type, home size, and the complexity of the installation. Request quotes from multiple professionals to compare.

Rimouski follows Health Canada's national guideline of 200 Bq/m³. If your home tests above this level, Health Canada recommends taking action to reduce radon within two years for levels between 200 and 600 Bq/m³, and within one year if above 600 Bq/m³.

Yes. Health Canada recommends testing every home in Canada, regardless of age, construction type, or location. Radon levels vary from house to house and even neighbouring homes can have very different readings. A long-term test of at least 91 days during the heating season is the most reliable method.

The most common system is active sub-slab depressurization (ASD). A certified professional installs a pipe through your foundation slab connected to a fan that draws radon from beneath the home and vents it safely above the roofline. Installation typically takes one day.