Rated on 4 platforms — Google 4.9, Facebook 5.0, TrustedPros 5.0, Houzz 5.0; ratings agree

"Treat every job like it's our own" has been the Cornell Roofing motto from the beginning — the way this Markham residential and commercial shop has earned repeat business in the same community for years, on quality products at a fair price.
4.9★ from 639 Google reviews
Rated on 4 platforms — Google 4.9, Facebook 5.0, TrustedPros 5.0, Houzz 5.0; ratings agree
Has a website and a published email on its own domain
Not in the Google Maps local top results
~3.8 years on Google Maps (from total-reviews ÷ monthly rate)
Not on Three Best Rated / BBB
~724 reviews across 4 platforms
Single Google Business listing — no multi-area signals
On 3 extra platforms; reachable by website, email, phone
1 platforms linked: Facebook · ~29 Facebook reviews
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By Scott Hays on Aug 11, 2024 Verified by Google

I used Cornell for a roof repair 20 years ago (2004) that lead to redoing a flat roof section. Quality was top notch. For 2024 that roof being close to thirty years old it was time to do a full replacement. I spoke to number of friends to see who all they used and got four different bids. Some were much higher than others. Cornell was very competitive. I really enjoyed working with Clint and his son. They do a very solid high-quality work with very high-quality materials. I highly recommend.
By Ray Crane on Feb 15, 2024 Verified by Google

I had a roof leak that I couldn't find, a contractor friend looked at it and couldn't find it. I called Cornell Roofing and Clint Sr. came out and he couldn't find it but patched a couple of spots to try to stop the leak. The next time it rained, it was still leaking so I called Clint and told him that I wanted to get it re-roofed. He sent a guy out to tarp it for me and within a short time he had his crew on-site busting it out. Clint Jr. and his crew re-roofed and took care of all dry rot in two days. I highly recommend Cornell Roofing for your roofing project.
By L Messina on Apr 25, 2023 Verified by Google

We didn't know who to contact and contacted several local roofing companies. Nearly immediately clear; Cornell Roofing was who we wanted to do business with. Kristen was sincere, professional, warm and human--providing individual, timely and attentive customer service...Kristen, thank you.
Mr. White--thank you for caring regarding every aspect of your business, for the customer and the roof! . It shines through and through. Timely, punctual, totally knows everything about roofing, and reasonable--affordable. We cannot recommend Cornell Roofing enough...and already have...Thank you!
By C Ferguson on Feb 27, 2023 Verified by Google

This company was amazing. I yold them i needed a new roof and they told me the roof was still good, i had atleast 6 years left before it needed to be replaced. I just needed to fix a couple of shingles that the wind blew out with all the bad weather we have had this winter. They came out and fixed it at a great price. The workers were nice, they cleaned everything up. Very happy with the experience.
By Araya Isaacson on Nov 18, 2017 Verified by Google

After a year and a half of trying to find someone to fix a minor repair on my roof, I came across Cornell Roofing and gave them a call. They came and checked out the problem almost immediately and came back the next week to complete the job. They got it done much faster than expected and I will definitely call them for any more repairs I may need. Highly recommended.