Toitures MJ
“Impeccable work, I am really happy to have done business with them for my roof,”
Best Insulation Contractors near Granby, QC
3 of these contractors are based in Granby; the others serve Granby from towns including Shefford (6 km), Sainte-Cecile-de-Milton (9 km) and Foster (22 km).
2 open weekends · 5 rated 4.5+ · 6 show a licence
Data verified October 18, 2026
Isolation SF
“Very good service and very good job”
Bourque Isolation LDL
“High quality work, super professional, good communication, very attentive to our needs, respect of the quote price and his team cleaned everything before leaving.”
Isolation IKL
“Very satisfied with the work carried out by the IKL Isolation technicians, they are meticulous, the price is fair, they took the trouble to protect the areas which should not receive product, attention to detail, they took the trouble to wondering if I wanted to cover certain elements for this or that reason, I have absolutely no complaints about the work done and I will not hesitate to recommend them if necessary.”
Isolation St-Hyacinthe Inc
“The work was done quickly and we are satisfied with it.”
Isolation Nordic
“Very satisfied with their work, I highly recommend this company!”
The 10 contractors listed for Granby, 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: Granby, QC
The 10 contractors on this page are rated from 4.0 to 5.0 across 102 reviews; 1 has 50 or more reviews and 5 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (90%), quality (79%) and value (62%). 2 are open on weekends. 6 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 2008. We have a website on file for 8 of the contractors on this page; 5 publish a contact page and 4 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 Granby?
No. 3 have an address in Granby and the rest come from other towns within 30 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.
Doucetconstruction2020inc.
Iso-Cal 2000 Inc
“It's one of the best companies”
Isolation Ecoplus
“We had our attic insulated, then the joist and foundation walls insulated and everything went very well.”
Dasyka Isolation
Why these companies made our list
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