Ontario Certified Roofing

We hold no one or two-star review text for Ontario Certified Roofing. That is not the same as there being none — it means our capture did not reach any. The rating breakdown above is Google’s own count and is the number to go on.

• workmanship6
• friendly staff6
• leak repair4
• attentive crew3
• competitive quote3
• shingles3
• fair pricing3
• easy to deal with2
• quick response2
• efficient2

14 more of the 27 reviews we hold text for, most recent first. We do not hold every review Google has.

• 5 out of 5Jonathon Campbell9 months ago

  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!

  Reply from the business

  Thanks, logistics and weather were a factor glad we could exceed your expectations.

• 5 out of 5william t9 months ago

  Adam will go above and beyond for you find the problem and will find a solution and more and actually call you back not like others adam is a solid guy who won't rip you off deffienlty use this company! Thanks adam

  Reply from the business

  Thanks Bill the kind words are appreciated ! Hopefully the repair holds up for the foreseeable future.

• 5 out of 5EXECUTI310 months ago

  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 …

  Google cut this review short. The full text is on their Google profile.

  Reply from the business

  Wow I am so sorry for taking so much time to reply to a in depth review. But thanks you!

• 5 out of 5JOSE ANTONIO VIVASa year ago

  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 …

  Google cut this review short. The full text is on their Google profile.

  Reply from the business

  Jose thanks for the great feedback. Hopefully we secured the flashing well enough to last until new roof time and thanks for choosing Ontario Certified Roofing

• 5 out of 5David Wassermana year ago

  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, …

  Google cut this review short. The full text is on their Google profile.

  Reply from the business

  David, Thank you! Such kind words. To receive such a detailed review! I'm so glad you trusted us with your home. Take care.

• 5 out of 5David Wilsona year ago

  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 …

  Google cut this review short. The full text is on their Google profile.

  Reply from the business

  It being directly on my route home that day made it the perfect storm. Lol. Glad we could be of service.

• 5 out of 5Adam Cherera year ago

  My roof started leaking badly and I called Adam at Ontario Certified Roofing in the evening. The next morning they showed up and removed ice dams on the roof. They did an amazing job.

  Reply from the business

  Thank you Adam for your review. We appreciate the recognition and the 5 stars. So happy we could help .

• 5 out of 5J Da year ago

  An outstanding experience (!) Ontario Certified Roofing truly came through for us. Their communication, workmanship, and pricing is unmatched.

  Reply from the business

  Thanks for the input and glad we could be of service it is much appreciated.

• 5 out of 5Doug Cranna year ago

  Adam and his team at Ontario Certified Roofing exceeded my expectations for professionalism and workmanship. We were beyond delighted with the look of our new roof and the condition of our property after the job was completed. I would, and have already recommended Ontario Certified Roofing to friends and neighbors.

  Reply from the business

  Thank you Doug , such an amazing compliment. And I'm so happy you love your roof. Take care. Adam

• 5 out of 5Christa Cheverie2 years ago

  OCR came to our rescue after loosing shingles in a storm leaving water pouring into our bedroom and garage. Within about 1.5 hours of talking to them, they had already been and fixed the roof while other companies were telling me it would …

  Google cut this review short. The full text is on their Google profile.

  Reply from the business

  Thanks Christa glad we could come out and help luckily we were in the area and repair ready, thanks for the positive feedback!

• 5 out of 5Dave Tribble2 years ago

  All of the people we dealt with were courteous and reliable. After the job our house was spotless, wouldn’t even have known they had been here, short of the fabulous roof they had installed. I’d recommend them to anyone for roofing needs. 5 stars aren’t enough.

  Reply from the business

  My apologies for just replying now. Thank you Dave, so much for your kind words. And thank you for taking the time to say something at all. It really is appreciated.

• 5 out of 5Cyrus Benjamin2 years ago

  Adam is Amazing.

  Reply from the business

  Thanks for the positive feedback. Glad we were able to complete your project to satisfaction.

• 5 out of 5Rob G2 years ago

  Ontario Certified Roofing was great to work with. Professional service and good pricing. Adam was always quick to respond to our calls and questions.. Great team.

  Reply from the business

  Thanks for the kind words glad I could be of service. I hope all the updates to the house continue to go well.

• 5 out of 5Barrett Windle2 years ago

  Adam and his team did a great job fixing my leak. They came within days of agreeing on a fair price and left everything cleaner than when they started.

  Reply from the business

  Glad we could meet your expected standards. Really appreciate you allowing us the use of your tractor it sure made the chimney clean up a breeze.

Another project complete and what a tough one this was, with all these small dormers and choke points on this house. We took our time and pout the proper kickers in to ensure the water ended up in the trough. This was a big one and a great challenge in Gravenhurst, the before during and completion pictures are shown here. The was a Owens Corning Roof Estate Grey.Apr 17, 2026