Since 1976

Commercial & Industrial
Metal Roofing Specialist

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The low slope metal roofing replacement solutions.

1 800 263-8452 

Specialist in Flat Roofing for 50 Years

BBB Accredited BusinessWatertite Roofing was established over 50+ years ago - our expertise is the installation, repair, replacement, retrofit or maintenance of commercial, institutional and industrial flat roofs. We help customers in Hamilton, Mississauga, Burlington, Etobicoke, Niagara Falls, St. Catharines, and other regions in Southern Ontario, find solutions to their flat roofing challenges. Our company has solved leaky roof problems for thousands of customers seeking waterproofing results that will protect their buildings, businesses and properties.

Having completed countless installations of built-up, tar & gravel, metal, EPDM and rolled roofs, we have seen the roofing construction industry transition from coal tar pitch, built-up tar & gravel, rubber membrane and metals to a variety of new technology rolled roofing products. One new area of interest is in reflective, white, green or PVC roofing. Read More is what links look like?

After extensive experience and decades in this business, our roofing product line of choice is the North American made Duro-Last PVC thermoplastic pre-engineered system.


Primary Services


Vital for spotting early roof issues like leaks and rust, ensuring timely interventions to prevent major damage and extend roof life.

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Provides expert metal roof installations with a variety of materials and designs, ensuring both aesthetic and functional excellence.

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Offers timely repairs for any metal roof damage due to weather or wear, including leak fixes and panel replacement, to avoid larger issues.

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Essential upkeep service for metal roofs, involving cleaning, rust prevention, and seam sealing, to maintain integrity and performance.

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Our most recent projects

Shaw Festival Theatre

In the heart of Niagara-on-the-Lake, Ontario, where the spirit of theater thrives, lies the prestigious Shaw Festival Theatre&mdasha bastion of cultural heritage...

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In the realm of commercial and industrial roofing, innovation isn't just a buzzword; it's a game-changer. And when it comes to revolutionizing roofing solutions...

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When it comes to commercial and industrial roofing, every leak can spell disaster. That's where Watertite Roofing steps in, providing expert solutions to keep...

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What our customers are saying

  • We purchased a building requiring a new flatroof. Didn't take to long to figure out who I was going to work with. Thru multiple business owners in the area and talking with some friends in real estate, the same name kept coming up. I gave Zach, owner, a call and booked a time to take a peak. He arrived ontime, prepared and presentable. He knew his product well and came up onto the roof to explain the process. After measurement and finalizing the details we decided to proceed with a roof replacement. A quotation was sent back within 2 days with pictures of the existing roof, new roof design and the payment schedule from start to completion. His crew that did the roof were very respectable of my property. There was no garbage left behind and the end product turned out great. Clearly, I'd be happy to do business with Watertite again. I could have done the contract on a handshake. Zacks words were few but what got promised happened and his communication was clear. I would have zero reservations in passing their name forward. Thanks for helping me out. Great company.
    Drew Williams
  • We have used Watertite Roofing on several occasions and have been extremely happy with their service. They have come to our rescue many, many times always swiftly and professionally. It's incredibly hard finding a great roofing company. I'm pleased to say that we've found them and look forward to doing business with them for many years to come.
    Melissa Turner
  • 5 Stars for commercial flat roofing in Haldimand and Niagara
    Myron Myslowka
  • The crew from Watertite Roofing did and amazing job. They were professional and friendly and worked hard to get the job done. Quality of work was fantastic. It even cost less than originally quoted and appreciated the honesty. Highly recommend this company.
    J. W.
  • Watertite Roofing is very professional. The quality of their work is outstanding. I would not hesitate to use the them again.
    Greg Olsen
  • We did our due diligence on roofers when we needed a complete new 15,000 square foot flat roof. All signs were positive for Watertite and they did not disappoint us, they did a great job. Zack was our main contact and he kept us informed throughout the project and always returned our calls in a timely fashion. Well done Watertite team! Larry Fontaine, president of Fontaine Transport Inc.
    Barb Fontaine
  • In 2018 the team at Watertite installed a new flat roof on our building. Being that it was fairly new product and procedures to us we were a bit apprehensive at first. However, Zak and the team were great to deal with in terms of explaining the new product and installation procedures and it really eased our mind during the decision making process. During installation the team couldn't have been better. Quick, clean and efficient, very knowledgeable and upon completion they took the time to explain the do's and don'ts as well as general maintenance tips for us to follow. This past week during the excessive snow storms we've had in our area we had some water dripping into our office and showroom. Zak had a team member over the next business day to have a look, at no charge. He did the best he could to clear the water and ice from a frozen eavestrough and downspout that was causing water to travel behind siding and under the membrane. We are very grateful for them to have come out so quickly and not even charge us even though the leak wasn't even from their roof installation! We have another project in the works for the spring time and we will definitely be going with the team at Watertite again!
    Steve Yendt
  • Zac and his team have been incredible from our first contact. They were the most reasonably priced of 4 quotes, got the job done quickly when they said they would, have promptly responded to any queries and have came back to support installation of ventwork during renovations. The new roof, trim and eaves troughs look great and we're very happy with the service.
    Amanda Harry
  • Well, we started by looking for an award-winning roofing material that could withstand the harsh Canadian weather. Then we discover Dura-Last – the most advanced vinyl roofing material ever developed. In so doing we also discovered an award winning flat roofing installer, even recommended by Dura-Last themselves. Turns out Watertite Roofing is the best flat roofing installer in Canada, serving right here in Southern Ontario. Went to their office, and I couldn't believe the number of awards that they have received. Hall walls full of awards. Nobody gets that many awards unless you're real good. So we not only get an Award winning product to protect our commercial investment, but we get the award-winning installers to boot. Don't gamble with your commercial properties - Watertite Roofing; the flat roofing specialists.
    Don Cormier
  • I have full confidence in recommending this company to anyone. I have used Watertite on three occasions (three different buildings). They were professional, clean and their pricing was better than the competitors. Completely satisfied with the service and finished product.
    Stephane Marchand
  • I had the opportunity to work with Watertite in 2008, they educated me on their product along with the installation process. The job was completed in a diligent and timely manner and the material is a superior technologically advanced product. Most recently, I had an ice issue this past December where Watertite came out to my building to tackle an ice issue. Upon completion, I was shocked to hear from Zak that there was NO charge for the time spent. There are a very few out there that exercise honest ethical business practice... THANK YOU
    Zappa Zappa
  • Watertite did an amazing job with our rooftop terrace installation, very professional and built to last many years. I would recommend them to anyone looking for a solution that is long lasting and low maintenance. Amazing job!
    Glenn Edwards
  • It's great to see local businesses such as Watertite Roofing - Specialists in Flat Roofing actively participating and helping the local community. Thank-you so much for your support this year at our BMX race track. We all do it for the kids!
    FALLS BMX PARK (Falls BMX Park)
  • Always a pleasure working with Waterside Roofing from Dunnville, Ontario. Watertite is very professional at their workmanship and I will continue to have them complete multiple jobs in the future.
    Rodney Hipwell
  • We hired Watertite Roofing to repair a leaking flat overhang on the front of our house that had been poorly done by another roofing company about 10 years earlier. Rot had set in and owner Zak Keyes had the solution for a permanent fix. Lead hand Jon took over from there and skillfully directed his crew to undo all the damage, working tirelessly in cold weather to give us a house that looks great and the knowledge that the problems are fixed for good. We highly recommend Watertite Roofing for flat roof construction and repair. Leanne and Pierre – Hamilton Ontario
    Leanne Joanisse

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