Isolation Beauport
“Excellent service, the installation technicians very professional and courteous Eric gave me good advice on the purchase and answered all my questions”
Best Insulation Contractors in Quebec City, QC
15 contractors listed · 13 in Quebec City · 2 open weekends · 10 rated 4.5+ · 8 show a licence
Data verified October 21, 2026
Isolation Ecologik
“Very dynamic people, attentive to needs and above all with detailed follow-up which is increasingly rare.”
Isolation Résidentielle Quebec Exl-or
“They took care of the urethane insulation as well as the installation of the vapor barrier in the attic of our house located in Quebec”
Isolation R. Genest
“Really available, professional, he has excellent contacts to manage water infiltration/condensation emergencies.”
Isolation Chaleur Confort
“I had my foundation insulated and the job was very well done.”
Isolation Moderne de la Capitale (2016) Inc.
“Professional, honest and a pleasure to do business with.”
The 15 contractors listed for Quebec City, QC insulate attics, basements, headers and crawl spaces. Details under each one about materials, hours and advertised services are copied from the company's own site; star ratings and comments come from public reviews.
Area overview: Quebec City, QC
13 of the 15 contractors we list are based in Quebec City; the other 2 serve Quebec City from Lévis (2 km). 12 of the contractors on this page have a rating, from 4.3 to 5.0 across 503 reviews; 2 have 50 or more reviews and 10 are rated 4.5 or higher. 2 are open on weekends. The services the contractors on this page list most often on their websites are aspiration d’isolants (2), ignifugation (2) and insonorisation (2). 8 show a licence on their websites. Domain records put 9 websites of the contractors on this page at ten or more years old; the oldest dates from 2004. 1 lists coupons or special offers. We have a website on file for 14 of the contractors on this page; 11 publish a contact page and 13 list a public email. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
Are all of these firms based in Quebec City?
No. 13 have an address in Quebec City and the rest come from other towns within 20 km. Rig and hose mean these crews cover a wide area from one yard. Ask whether your address falls inside the zone they work without a surcharge.
Amiantek Isolation
Calotech Inc
Entreprises S. Gingras
Isolelit
Isolation Lapointe (2000) Inc
FL Isolation
Isodem
Constructions Vincent Ouzilleau
“Work carried out professionally and without surprises”
Toitures Garant et Frères Inc
Why these companies made our list
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