Systèmes Sous-Sol Québec
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None of these contractors is based in Saint-Jérôme; they work from towns including Laval (30 km), Saint-Laurent (39 km) and Saint-Lazare (45 km).
24 contractors listed · 8 open weekends · 19 rated 4.5+ · 13 show a licence
Data verified October 18, 2026
The 24 contractors listed for Saint-Jérôme, 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.

23 of the 24 contractors on this page have a rating, from 4.0 to 5.0 across 2,455 reviews; 6 have 50 or more reviews and 19 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (82%), value (72%) and quality (68%). 8 are open on Saturdays and 3 on Sundays. 13 show a licence on their websites. 6 have ten or more years of experience, the longest 19 years. 3 give free estimates and 1 lists coupons or special offers. We have a website on file for all 24 of the contractors on this page; 18 publish a contact page and 16 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.
A website is on file for all 24 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.