Roof Installations

Metal Roof Retrofits with the Duro-Last Flat and Low-Slope Roof System

Before during, and after a Watertite Metal Roof Retrofit has saved the day.


Watertite Roofing offers low-slope metal roof retrofit services with the Duro-Last roof system, providing an efficient solution to enhance the performance of existing metal roofs. By retrofitting with Duro-Last, Watertite eliminates common issues like leaky seams and roof openings typically associated with metal roofing. Moreover, this system adds significant value by incorporating flute filler insulation, effectively leveling out the roof's corrugations while simultaneously improving the roof's R-Value. In essence, the retrofitting service not only enhances durability and waterproofing but also boosts energy efficiency, ensuring a long-lasting and cost-effective solution for metal roof upgrades.

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What our customers are saying

  • 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
  • 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
  • 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
  • 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
  • The Optimist Club of Dunnville has worked with Watertite over the years. Recently, we contracted them to install a Duro-Last overlay roof system on the flat roof over our kitchen and back storage area. We were very pleased with the job. They noted a minor concern on a roof on which they were not working and repaired it at no extra charge. The team from - the quote, to the installation, to the office payment was friendly and professional. Installation of this durable, well-warrantied roofing allows us to focus our time and energy on our mission with the youth rather than worrying about leaking roof. Kudos to the Watertite team!
    Brenda Zynomirski
  • 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
  • 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.
  • 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
  • There’s a reason the Watertite team consistently receives glowing reviews & is a highly rated Better Business Bureau member - such standing can only be earned - by consistently delivering a high-quality service & customer experience. To start, Zak prepared a detailed quote that included photos & clearly outlined what needed to be done & why. Thereafter, Zak dispatched a highly skilled, professional team to make the much-needed repairs. Thank you Zak & team - you are a credit to your profession! In an industry fraught with unscrupulous characters, it’s a comfort knowing the Watertite team’s business model subscribes to such old-fashioned values as honesty, integrity, quality, & doing what they committed to do. Better Business Bureau membership is a key differentiator in an industry that lacks governance, oversight & consumer protection enforcement.
    C Prescott
  • 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
  • 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
  • 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 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
  • 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

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