Since 1976

Commercial &
Industrial Flat
Roofing Specialist

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Specialist in Flat Roofing since 1976

Watertite Roofing BBB Business ReviewWith an A+ rating, the Watertite Roofing - Specialist in Flat Roofing, with over 50 years of experience, lead in the installation, repair, replacement, retrofit, and maintenance of commercial, institutional, and industrial flat roofs. Serving Southern Ontario areas including Hamilton, Mississauga, Burlington, Etobicoke, Niagara Falls, and St. Catharines, we tailor solutions for every flat roofing challenge, focusing on delivering waterproof, durable results that protect buildings, businesses, and properties.

Our team of certified professionals is committed to excellence, using advanced technology and materials to ensure your roof withstands the test of time. We pride ourselves on our integrity, craftsmanship, and outstanding customer service, offering expert advice and comprehensive services for both emergency repairs and full replacements.

Choosing Watertite Roofing - Specialist in Flat Roofing means partnering with specialists who understand the importance of a reliable, leak-free roof. We are dedicated to guiding our customers through the complexities of flat roofing, ensuring satisfaction and long-lasting protection for your investment.

More about Watertite

Professional, accountable, awardable, repeatable and more to come.

48+
Years of Service
6,500+
Completed Jobs
78%+
Repeat or Referral
#1
Specialist in Flat Roofing

Our most recent projects

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What our customers are saying

  • Excellent company to work with! Thank you Zak and your team for being so responsive and for doing a great job! Zak is very knowledgeable and got back to me right away. Watertite was very responsive, professional and has high work standards. They repaired a leak and our roof hatch. Thank you for making this process so easy and painless.
    Nancy G
  • Our church (Port Colborne BIC Church Port Colborne Ontario) contracted Watertite Roofing to install new roofing on our flatroof here at the church. We are so very pleased with the job... well done...professional...tidy...exceptional workmanship...thorough...and wonderful to work with from beginning to completion. Five stars for a job well done.
    Brian Lofthouse
  • 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
  • Great responsiveness, good value and no hidden costs. Would not hesitate to recommend this company to anyone needing roof work. Chris Elgar of C Elgar Holdings Limited.
    Chris Elgar
  • 5 Stars for commercial flat roofing in Haldimand and Niagara
    Myron Myslowka
  • 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
  • After doing a lot of research on possible solutions for renewing an existing 35yr old low pitch corrugated metal roof on a pre-eng industrial building; a membrane overlay system was chosen as the most effective from a performance, cost and warranty standpoint. After engaging 3 local firms for proposals, it quickly became apparent that Watertite was by far the best solution to meet our needs. Their rep (Zak) was very easy to work with, maintained great communications, and was very professional/responsive to any questions or communications I had. Through the whole process (survey, quotation, project coordination/execution, and wrap-up), Watertite and their personnel were top notch with little inconvenience to the tenant. Definitely would not hesitate to highly recommend Watertite and the Duro-last membrane system.
    Dave Allan
  • 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
  • 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.
  • 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
  • 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)
  • As a custom home builder and renovator we work on many unique projects that require unique products and solutions. We only work with contractors that can provide the level of professionalism, service, and product quality that we demand of ourselves for our clientele. Watertite Roofing is one of those contractors who sets the bar higher for others. Their response time, organization of operations, and delivery on service is rarely paralleled. And they install a durable, well warrantied product that takes a load off our minds. We wouldn't use anyone else.
    David Tucker
  • Great experience - everything about their roof system was well explained, price was very competitive and the work was done on schedule with a great crew - what more could you ask for?
    M. B.
  • As the VP on the board of directors for our co-op apartment building in Hamilton for only the last 8 years, I was not involved in the initial decision to purchase a replacement solution for our, now, 60 year old building and therefore cannot comment on time lines involved. However, a few years ago, we felt the need to make sure it was working as it should and had a Watertite manager come to do an appropriate inspection, which resulted in his assurance that all was as it should be, which also gave me the opportunity to get a deeper understanding and appreciation of the Duro-Last product installed by Watertite. Though it is ill advised to walk around the roof in spiked track shoes, there is a fair amount of traffic as a result of regular, seasonal maintenance of our 4 roof drains by service personnel and yet the roof still continues to show no sign of aging. There is an apartment across the street of similar size and vintage that seems to almost annually require people to come and re-apply tar paper and heated tar. By contrast our roof has needed absolutely no maintenance in the 10 years since its installation and we still have another five years on our warranty. I understand this material has a number of installations in excess of 30 years. My understanding of the initial advantages of our purchase decision relate to: - the comparative speed and efficiency of installation due to its pre-engineering and construction in the consistency of a factory environment, -the fact the membrane could be installed over top of existing infrastructure without expensive replacement of valuable materials that continued to serve the building, -that it is safely installed without the use of open flame tools and finally, -as opposed to (sun) heat-absorbing tar paper based installations, the Duro-Last is made of a reflective material which contributes directly to the diminished need for air conditioning compensation. I have zero problems recommending the Watertite's Duro-Last roof replacement or for new building installation.
    Brian Patriquin
  • 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

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