Crack Pro Foundation Repair
“We had an issue during a rain storm just before Christmas and these guys were on site quick and had the foundation leak stopped within minutes.”
Best Concrete Contractors in Cornwall, ON
11 companies listed · 6 in Cornwall · 1 open 24/7 · 4 open weekends · 7 rated 4.5+
Data verified October 18, 2026
Robert Boileau Construction LTD
“I have had 2 Homes built by Robert Boileau Construction LTD, and I have been beyond happy with the services he was able to provide.”
Malyon Excavation Ltd (& Snow Removal)
“I have so far great experience with them”
Little Digger
“Called back the next day and spoke to the friendliest and extremely accommodating people.”
Laframboise Concrete Flooring
“Did an amazing job on my cement slab for my garage well appreciated”
Clermont Rosa Formwork
Listed for homeowners in and around Cornwall, ON, these 11 companies do concrete work. What each says about mixes, finishes and scheduling around the cold season comes from its own website; the ratings and comments on this page are from public reviews.
Area overview: Cornwall, ON
6 of the 11 companies we list are based in Cornwall; the other 5 serve Cornwall from towns including Long Sault (8 km), South Glengarry (5 km) and Ingleside (20 km). 10 of the companies on this page have a rating, from 4.0 to 5.0 across 95 reviews; 7 are rated 4.5 or higher. 1 is open around the clock; 4 are open on Saturdays and 2 on Sundays. 2 offer emergency call-outs; 1 gives free estimates and 1 is family- or locally-owned. We have a website on file for 7 of the companies on this page; 5 publish a contact page and 2 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.
Why are some of these companies based elsewhere?
6 of the 11 companies are listed in Cornwall itself. The rest come from other towns within 25 km and show where they are based. Crews cover a wide area between jobs, and a reasonable haul for the truck is part of the trade, so an out-of-town firm is fine.
David Brown Construction Ltd.
“Called to have septic tank pumped and was out to pump it by end of the week.”
Losey's Haulage
“They get the job done with no issues.”
Quality Concrete Work Ltd.
“Robert and his crew did an amazing job on my stamped concrete driveway.”
Seaway Elitecrete
“Very good group of guys, always helped me out when I needed some chemicals or advice.”
Chretien Excavation Inc
Why these companies made our list
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