Radon Professionals in Quebec

About Radon in Quebec

Last updated: March 2026

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

$1,800–$3,200

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 1–15 of 42 professionals in Quebec

Détection Magnova

Quebec, QC
Basic
5.0(275)Google

Offers radon measurement and mitigation services. Most recommended in Eastern Canada with 15+ years of experience and 4000+ satisfied clients.

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Radon Ottawa - Gatineau

Chelsea, QC
Basic
4.6(19)Google

C-NRPP certified & insured for radon mitigation and testing consultation in Ottawa, Gatineau & surrounding areas since 2008, guaranteeing results.

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Catherine Plourde

Quebec, QC
Basic
5.0(31)Google

Offers radon measurement & attenuation services in Quebec, QC & surroundings since 2014. PNCR-C/C-NRPP accredited. RBQ: 5675-7651-01.

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Action-Radon.net Inc.

Saint-Hubert, QC
Basic
5.0(249)Google

Radon mitigation specialist in Quebec with 20+ years experience, offering certified testing and attenuation services. Holds C-NRPP & NEHA-NRPP certifications.

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Les Pros du Radon

Saint-Augustin-de-Desmaures, QC
Basic
5.0(31)Google

Offers PNCR-C/C-NRPP accredited radon measurement and attenuation services since 2014 in the Québec region. All work guaranteed.

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Eva Radon

Saint Frédéric, QC
Basic
5.0(5)Google

Specializes in radon evaluation, measurement, and mitigation. A CAA-Québec recommended contractor with PNCR-C certified professionals, serving Chaudière-Appalaches and Capitale-Nationale.

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Zéro Radon

Montreal, QC
Basic
5.0(36)Google

Provides C-NRPP certified radon testing and mitigation services in Montreal, QC. Offers free estimates. Free digital tester available to Hudson & Saint-Lazare neighbours.

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Inspection Domiland Inc.

Longueuil, QC
Basic
5.0(7)Google

C-NRPP certified with over 10 years experience in radon testing, reduction, and building inspection. Serves Grand Montréal and is a member of AIBQ and CARST.

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MB Radon Solutions

Gatineau (Aylmer), QC
Basic
5.0(1)Google

Measurement & mitigation of radon in homes & businesses in Ottawa/Gatineau & surrounding areas since 2008. Offers radon rough-ins, passive activation & free consultations.

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Radon Expert Solutions Inc.

Morin-Heights, QC
Basic
5.0(37)Google

Provides professional installation of radon mitigation systems, including active sub-slab depressurization with RadonX IPEX piping, in Morin-Heights, QC. Guarantees post-installation levels below 100 Bq/m3 with a 5-year warranty.

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Radon Montreal

Saint-Lazare, QC
Basic
5.0(36)Google

Offers C-NRPP certified radon testing and mitigation services based in Saint-Lazare, QC. Provides free radon tester loans to Hudson and Saint-Lazare residents.

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Solutions Radon MB

Maniwaki, QC
Basic
5.0(1)Google

Provides professional radon measurement & mitigation services for homes & businesses. Serving the Ottawa/Gatineau area & surrounding regions since 2008.

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Radon Provincial

Québec, QC
Basic
5.0(275)Google

Provides radon measurement & mitigation in Eastern Canada. Over 15 years experience and 4000+ satisfied clients.

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Isolation MJ

St-Alexandre-de-Lamouraska, QC
Basic
5.0(8)Google

Offers radon and insulation services for residential, commercial, and industrial clients throughout KRTB and eastern Quebec.

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Spheratest

Montreal, QC
Basic
4.4(10)Google

Certified PNCR-C professional for radon gas services in Montréal, QC. Specializes in residential, commercial, and investor client needs.

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Browse by City in Quebec

Top cities by professional count

Radon mitigation in Quebec, Quebec
7 local professionals listed
Radon mitigation in Montreal, Quebec
6 local professionals listed
Radon mitigation in Saint-Hubert, Quebec
2 local professionals listed
Radon mitigation in Anjou, Quebec
2 local professionals listed
Radon mitigation in Chelsea, Quebec
1 local professional listed
Radon mitigation in Saint-Augustin-de-Desmaures, Quebec
1 local professional listed
Radon mitigation in Saint Frédéric, Quebec
1 local professional listed
Radon mitigation in Longueuil, Quebec
1 local professional listed
Radon mitigation in Gatineau (Aylmer), Quebec
1 local professional listed

Other areas with radon professionals

Morin-HeightsSaint-LazareManiwakiSt-Alexandre-de-LamouraskaSte-JulieVaudreuil-DorionSherbrookeJonquièreSt-JeromeRosemereLavalBeloeilGranbyLa PrairieRimouskiMataneSaint-mathias-sur-richelieuMascoucheGatineauTrois-Rivières

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Frequently Asked Questions: Radon in Quebec

The Laurentians, Eastern Townships (Estrie), Outaouais, and Mauricie regions tend to have higher radon due to Grenville-province geology. Communities like Gatineau, Sherbrooke, and Shawinigan are in elevated-risk zones. Montreal sits on lower-risk sedimentary geology but local variations exist.
Radon testing is not legally required in Quebec real estate transactions. The Outaouais region near Ottawa has higher awareness, but testing is not yet as routine as home inspections in most Quebec markets.
Quebec follows Health Canada's national guideline of 200 Bq/m³. There is no separate provincial standard. The Quebec Ministry of Health supports Health Canada's testing and mitigation recommendations.
Yes. Stone foundations common in older Quebec homes and concrete block foundations have many natural gaps and joints through which radon can enter. These homes often benefit from both air-sealing and a sub-slab or sub-membrane depressurization system.
Radon enters homes year-round, but levels are typically higher in winter when homes are sealed against the cold. Health Canada recommends testing during the heating season for the most representative result.
A standard active sub-slab depressurization installation takes one day in most cases. Older homes with complicated foundations or multiple entry points may require additional sealing work that extends the project.
Yes. Certified radon professionals operate throughout Quebec, including in Montreal, Quebec City, Gatineau, Sherbrooke, and many other regions. Use the city search above to find a certified professional near you.
Most Quebec homeowners pay between $1,800 and $3,200 for a complete mitigation system. Older homes may require additional sealing work that adds to the total cost.

Radon Resources for Quebec

Tools and guides to help you understand radon risk and take action.

Check your radon risk
Estimate your risk based on province, home age, and foundation type.
Understand your test results
Learn what Bq/m³ means and when action is required.
DIY radon test kits
Compare test kit options starting from $10.
Radon guides & articles
In-depth guides on testing, mitigation, and health risk.
Browse all provinces
Find certified professionals anywhere in Canada.
Radon FAQ
Answers to the most common questions about radon.