Isolation Equinoxe Plus
“Superb service and expertise, thank you Daniel for the flexibility and speed!”
Best Insulation Contractors near Saint-Constant, QC
These contractors serve Saint-Constant from nearby bases in towns including Saint-Jean-sur-Richelieu, Sainte-Catherine and Lasalle.
10 contractors listed · 5 open weekends · 8 rated 4.5+ · 5 show a licence
Data verified October 18, 2026
Couvreurs Demos Roofing Inc
“Demos roofing where reliable, what was written on the estimate was 100% honoured.”
Toitures en Alertes
“Super happy with the magnificent work Very good price extraordinary quality very good staff”
Isolation Anacam Inc
“After their visit, we immediately booked their services again to add insulation to the attic.”
Garage Outfitters
“All employees that worked on the job were good, on time, and very courteous.”
Toitures Messier et Tougas
“Super professional, we took the time to check everything and explain to me what needed to be done, with supporting photos.”
The 10 contractors listed for Saint-Constant, 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: Saint-Constant, QC
The 10 contractors on this page are rated from 4.1 to 5.0 across 475 reviews; 3 have 50 or more reviews and 8 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (97%), value (72%) and quality (69%). 5 are open on Saturdays and 3 on Sundays. 5 show a licence on their websites. Domain records put 5 websites of the contractors on this page at ten or more years old; the oldest dates from 2011. 1 offers emergency call-outs and 1 gives free estimates. We have a website on file for all 10 of the contractors on this page; 8 publish a contact page and 7 list a public email. We count these figures across the contractors on this page; hours and prices change, so confirm the details with the contractor before you book.
How many listings here have a website?
A website is on file for all 10 contractors here. Look for the materials they install and whether they do attics, basements or both, because plenty of crews specialize in one. Where there is no site, ask the same questions by phone before booking a visit.
Isolation Mike Turmel
“Your employees were very kind, professional and their work was very well done.”
Toitures H.P. Inc.
“Great service, they are very efficient and professional”
Isolation Saint-Luc
“The service was great, all my questions were answered, the service was super fast and the price was reasonable!”
Iso Fuzion
“Savaria did at my home, he is very professional and reliable, I recommend him.”
Why these companies made our list
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