C-NRPP Certified Radon Companies in Montreal
Every company holding current Canadian National Radon Proficiency Program certification that is based in Montreal, or that names Montreal in its own service area. Listed free, whether or not they know this page exists.
Two lists, because the difference is a fact and the alternative is a guess. The first is companies whose registered address is here. The second is companies based elsewhere in Quebec that state they cover this area. We do not assume that a firm in one town serves the next one over, so if you do not see enough names, the
full Quebec list has everyone.
Based in the Montreal Area, 8
Their registered address with C-NRPP is in this area. The town on each card is the one they gave the registry.
Certified to Install the Fix
Eco Radon Solutions
measurementmitigationcommercial measurementcommercial mitigation
Inspection Domiland Inc.
measurementmitigationcommercial measurementcommercial mitigation
Serves MONTREAL, RIVE-SUD, LAVAL etc (their own stated coverage)
Inspections Bouclier Inc.
Based in Kirkland, Quebec
measurementmitigation
Serves Kirkland (their own stated coverage)
Certified to Measure Only
AtmoTest
measurementcommercial measurement
exp Services Inc.
commercial measurement
Serves Quebec region; Montreal (their own stated coverage)
Radon Maison
Based in Montreal, Quebec
measurement
Spheratest
measurementcommercial measurement
WSP
Based in Montreal, Quebec
measurement
Serves Montreal (their own stated coverage)
Cover Montreal from Elsewhere in Quebec, 5
Based somewhere else, but Montreal appears in the service area they gave the registry themselves.
Certified to Install the Fix
Enspeco
measurementmitigation
Serves Vaudreuil-Dorion; Residential Measurement; Vaudreuil-Dorion; Greater Montréal and Montérégie (their own stated coverage)
Le Groupe Gesfor Poirier, Pinchin, Inc.
measurementmitigationcommercial measurementcommercial mitigation
Serves Montreal; Rimouski; Residential Mesure; Quebec; Saint-Leonard; Québec, Chaudière-Appalaches, Mauricie, Côte-Nord, Bas-Saint-Laurent, Gaspésie (their own stated coverage)
Radon Evolution Inc.
measurementmitigationcommercial measurementcommercial mitigation
Serves Residential Mesure, Atténuation, CNRCC, Lanaudière, Laurentide, laval, Montréal, Montérégie (their own stated coverage)
Radon Expert Solutions Inc.
measurementmitigation
Serves Laurentides, Laval, Lanaudière, Rive-Nord, Basse-Laurentides (their own stated coverage)
Certified to Measure Only
LEGAULT-DUBOIS INC.
Based in La Prairie, Quebec
measurementcommercial measurement
Serves Montreal area (their own stated coverage)
What the Two Certifications Mean
C-NRPP certifies separately for measurement, finding out what a home reads, and for mitigation, installing the system that fixes it. Plenty of companies hold only one. If a test has come back high, you want a company on the first list above.
See also: the Montreal radon map, every certified company in Quebec, and what counts as a safe level.
Certification data from the Canadian National Radon Proficiency Program public registry, read on 5 September 2026. Service areas are each company's own words. Nothing on this page is paid for.