Best Roofing Contractors in Cornwall, ON
10 companies listed · 4 in Cornwall · 4 open weekends · 8 rated 4.5+ · 2 show a licence
Data verified October 18, 2026
Baumann Accurate Roofing
“This is a company that goes over and beyond what is expected of them, and the best thing is that they are very reasonably priced and do not take advantage of their clients.”
Done Right Roofing
“They replace the insulation, repaired damage, removed a tower that was mounted on the roof, put in a new membrane and completed the repair.”
Leblanc and Son Roofing
“They were busy and took a bit but eventually came back, did the flashing around the base of the chimney and didn't even charge me anything.”
David R. Coleman General Contractor Ltd.
“Brody and Mitchell are professional and responsive.”
Poirier D Roofing
“Very professional, communicated delays due to rain, no mess left behind arrived at 0630 and were gone when I got home from work.”
Listed for homeowners in and around Cornwall, ON, these 10 companies take roofing work. What each one claims about tear-offs, membranes and workmanship cover is taken from its own website; ratings and quoted lines come from public reviews.
Area overview: Cornwall, ON
4 of the 10 companies we list are based in Cornwall; the other 6 serve Cornwall from towns including Monkland (22 km), Maxville (26 km) and Saint-Anicet, QC (31 km). The companies on this page are rated from 3.8 to 5.0 across 95 reviews; 8 are rated 4.5 or higher. 4 are open on weekends. 2 show a licence on their websites. 2 have ten or more years of experience, the longest 40 years. 3 give free estimates and 1 is family- or locally-owned. We have a website on file for 8 of the companies on this page; 7 publish a contact page and 8 list a public email. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Do roofers listed for Cornwall quote at no charge?
Free estimates are stated by 3 of the 10 companies on this page. A free visit is normal in this trade, though it doubles as a sales call. Ask for photos of the roof and the attic, written findings, and a price that separates the tear-off from anything found under it.
Cassell Roofing
“Honest, fast and showed us where the previous roof job ( done on a new build no less) was not done properly- no tar paper under the shingles!!”
Vaillancourt
Toiture & Renovation d'Aoust
Van den Oetelaar Roofing & Contracting Inc
“Easy to communicate with, very professionnal team and a job well done.”
Why these companies made our list
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