Rated on 2 platforms — Google 4.9, Facebook 4.0; ratings agree

Ontario Certified Roofing is an established roofing name in Newmarket, ON. Customers most often highlight its workmanship, punctuality, professionalism. It earns an N49 Trust Score of 51.7/100 in our independent review.
4.9★ from 33 Google reviews
Rated on 2 platforms — Google 4.9, Facebook 4.0; ratings agree
Has a website and a published email on its own domain
Not in the Google Maps local top results
~8.3 years on Google Maps (from total-reviews ÷ monthly rate)
Not on Three Best Rated / BBB
~37 reviews across 2 platforms
Single Google Business listing — no multi-area signals
On 1 extra platforms; reachable by website, email, phone
3 platforms linked: Facebook, Instagram, LinkedIn · ~4 Facebook reviews
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By Jonathon Campbell on Nov 18, 2025 Verified by Google

Adam and his team are one of those hard working professional I’ve met. They were tasked to repair my deck after a fire repair and from start to finish, were transparent, professional and diligent. Unfortunately the weather wasn’t ideal and that didn’t stop them from being punctual and after multiple occasions of telling them to go home, they continued the job under questionable conditions and completed above my expectations. Highly recommend for your needs!
By Jonathon Campbell on Nov 18, 2025 Verified by Google

Adam and his team are one of those hard working professional I’ve met. They were tasked to repair my deck after a fire repair and from start to finish, were transparent, professional and diligent. Unfortunately the weather wasn’t ideal and that didn’t stop them from being punctual and after multiple occasions of telling them to go home, they continued the job under questionable conditions and completed above my expectations. Highly recommend for your needs!
By EXECUTI3 on Sep 21, 2025 Verified by Google

We honestly couldn’t have asked for a better experience with Adam and his team. From day one, they were friendly, professional, and really easy to deal with. The crew showed up on time, worked hard every single day, and made sure everything was cleaned up before they left—which we really appreciated.
What stood out the most is that they didn’t just “do the job.” They actually went the extra mile for us. They took the time to explain things in a way we understood, answered all of our questions, and even helped with a few extras they didn’t have to. You can tell they truly care about their customers and take pride in their work. Adam is super knowledgeable and a true professional. He helped fit us into his schedule when we needed serious help with a leak and huge issues with our roof. He ensured everything was safe and sound, racing bad weather ahead.
The roof looks amazing, and we feel so relieved knowing it was done right. It’s not easy to find a company that delivers this kind of quality and service, but Adam and his guys truly did. Highly recommend them to anyone looking for roofing work. Have recommended Adam to all our friends, locals and on Facebook Groups.
By EXECUTI3 on Sep 21, 2025 Verified by Google

We honestly couldn’t have asked for a better experience with Adam and his team. From day one, they were friendly, professional, and really easy to deal with. The crew showed up on time, worked hard every single day, and made sure everything was cleaned up before they left—which we really appreciated.
What stood out the most is that they didn’t just “do the job.” They actually went the extra mile for us. They took the time to explain things in a way we understood, answered all of our questions, and even helped with a few extras they didn’t have to. You can tell they truly care about their customers and take pride in their work. Adam is super knowledgeable and a true professional. He helped fit us into his schedule when we needed serious help with a leak and huge issues with our roof. He ensured everything was safe and sound, racing bad weather ahead.
The roof looks amazing, and we feel so relieved knowing it was done right. It’s not easy to find a company that delivers this kind of quality and service, but Adam and his guys truly did. Highly recommend them to anyone looking for roofing work. Have recommended Adam to all our friends, locals and on Facebook Groups.
By David Wasserman on Jan 21, 2025 Verified by Google

I couldn’t be happier with the work done by OCR. Adam and his team went above and beyond what I expected. Originally, they were just going to replace the shingles, but during the job, they discovered leaks in the old roof, rotting plywood, and very little insulation. Adam was incredibly fair, trustworthy, and gave me lots of suggestions and advice. He took extra time to ensure everything was done correctly. You can tell he really takes pride in his work, and it shows in the quality and attention to detail. Their pricing was fair, the team was professional and thorough, and they left everything spotless when they finished. I highly recommend Ontario Certified Roofing to anyone in need of roofing services. Outstanding experience all around!
By David Wasserman on Jan 21, 2025 Verified by Google

I couldn’t be happier with the work done by OCR. Adam and his team went above and beyond what I expected. Originally, they were just going to replace the shingles, but during the job, they discovered leaks in the old roof, rotting plywood, and very little insulation. Adam was incredibly fair, trustworthy, and gave me lots of suggestions and advice. He took extra time to ensure everything was done correctly. You can tell he really takes pride in his work, and it shows in the quality and attention to detail. Their pricing was fair, the team was professional and thorough, and they left everything spotless when they finished. I highly recommend Ontario Certified Roofing to anyone in need of roofing services. Outstanding experience all around!
By JOSE ANTONIO VIVAS on Dec 11, 2024 Verified by Google

Excellent experience. Adam and his partner came same day to complete a repair on the exterior roof FLASHING. He came with the metal material in hand, matching in color. While up there he also noticed some of the other panels were a bit loose and took the courtesy to drill some screws to prevent further repair issues.
I highly recommend Adam and Ontario Certified Roofing. They are prompt, professional and offer a excellent rate compared to other local competitors. Cheers
By David Wilson on Aug 20, 2024 Verified by Google

I discovered a leak in my cottage bathroom and thought it might be from the plumbing stack. I went on to homestars and put in my information and was immediately contacted by Ontario certified roofing. I explained the problem and 2 hours after that Adam, his truck and workshop trailer showed up. It turns out the problem was not obvious and took a certain degree of expertise to determine what was going on. Within 2 hours Adam was on his way. Roof fixed and leaving behind a very happy customer. Days later I'm still getting calls from roofing companies on HomeStar that can maybe fit me in next week to come and have a look at it. Thanks Adam. I'm sure all calls can't go that quickly, but it is the end result that counts.
By David Wilson on Aug 20, 2024 Verified by Google

I discovered a leak in my cottage bathroom and thought it might be from the plumbing stack. I went on to homestars and put in my information and was immediately contacted by Ontario certified roofing. I explained the problem and 2 hours after that Adam, his truck and workshop trailer showed up. It turns out the problem was not obvious and took a certain degree of expertise to determine what was going on. Within 2 hours Adam was on his way. Roof fixed and leaving behind a very happy customer. Days later I'm still getting calls from roofing companies on HomeStar that can maybe fit me in next week to come and have a look at it. Thanks Adam. I'm sure all calls can't go that quickly, but it is the end result that counts.
By Dawn H on Mar 14, 2024 Verified by Google

Adam was a pleasure to work with. He is attentive, accommodating, and an excellent communicator. His customer service is impeccable!
His crew worked quickly and safely. They cleaned up perfectly. You couldn't even tell that they had been here.
Adam provided us with a quote quickly. Upon completing the job, he promptly emailed us our invoice and our warranty, which he had already registered us for.
Highly recommend!!