COMMERCIAL AND INDUSTRIAL FLAT ROOFING DONE BY TOP-RATED CONTRACTORS IN ONTARIO
At Watertite Roofing, we protect businesses with durable, energy-efficient roofing. Our experienced team ensures long-lasting results, reliable service, and solutions tailored to your needs.
At Watertite Roofing, we specialize in providing top-tier roofing solutions tailored to meet the unique needs of our clients. When it comes to roof replacements, we pride ourselves on utilizing the most advanced materials and techniques to ensure superior performance and long-lasting durability…
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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…
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At Watertite Roofing, we specialize in providing reliable repair services for all types of flat and low-slope roofing systems. With years of experience and a dedicated team of roofing professionals, we offer comprehensive solutions to address any issues your flat roof may encounter. Our services…
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Discover the perfect solution for enhancing your outdoor living space with Watertite Roofing’s vinyl decking roof systems. Our expert installation services ensure your patio receives superior protection and aesthetic appeal. Our vinyl decking roofs offer a single product solution for long-lasting…
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50+
Years of Service
6,700+
Completed Jobs
>78%
Repeat or Referral
#1
Specialist in
Flat Roofing
Watertite Roofing, a specialist in flat roofing with over 50 years of experience, holds an A+ rating for its trusted expertise and service.
We lead in the installation, repair, replacement, retrofit, and maintenance of flat roofs for commercial, institutional, residential, and industrial properties.
Serving Southern Ontario areas including Hamilton, Brantford, Simcoe, Burlington, Niagara Falls, St. Catharines, Welland, Fort Erie and more, we tailor solutions for every flat roofing challenge, focusing on delivering waterproof, durable results that protect buildings, businesses, and properties.
We build lasting partnerships through trust and performance.
Our certified pros ensure safe, code-compliant installations.
Every commercial roof we install reflects precision and durability.
Commercial and industrial flat roofing done by Ontario’s top-rated flat roofing contractor.
As a trusted flat roofing contractor, we specialize in high-performance flat roof installations, expert repairs, ongoing maintenance, and full roof replacements. Our certified team is trained to deliver high-quality roofing services with a focus on long-term value and customer satisfaction.
We use only the best roofing systems, including the Canadian-made Goliath Roofing System and the Duro-Last PVC roofing membrane, trusted for their proven performance in commercial and industrial roofing projects.
Watertite Roofing has been one of Ontario’s leading names in commercial and industrial flat roofing since 1976. With over 50 years of hands-on experience, we know how to install and maintain durable, code-compliant flat roofing systems for all types of commercial buildings and industrial properties.
More than 78% of our business comes from referrals and repeat clients—proof that we’re a commercial roofing company people trust. Our A+ BBB rating and 4.9-star Google reviews back that up.
Our decades-long relationship with Duro-Last reflects our commitment to quality and innovation. In 2024, we proudly expanded our offerings with the Goliath Roofing System, a Canadian-made, polyester-reinforced single-ply membrane known for exceptional performance in demanding climates.
Whether you need a roof replacement, flat roof repair, or new roof installation, Watertite delivers long-lasting, cost-effective roofing solutions.
Watertite Roofing is the trusted flat roofing contractor for dependable repair and roof maintenance services across Ontario.
Our roofing team conducts regular roof inspections to identify leaks, drainage issues, membrane damage, and signs of wear. This proactive approach prevents costly repairs and keeps your roof in optimal condition.
We use high-quality roofing materials—including Goliath and Duro-Last membranes—to perform flat roof repairs that stand the test of time. From emergency roof repair to scheduled maintenance, we help you extend the life of your roof and minimize downtime.
Our experienced team of flat roofing experts is trained and certified in installing, maintaining, and replacing single-ply roofing systems.
We understand the nuances of working on commercial and industrial flat roofs and use only premium-grade materials, including PVC membranes from Goliath Roofing Systems and Duro-Last, to ensure leak prevention, strength, and energy efficiency.
Since 1976, Watertite Roofing has delivered trusted commercial roofing services throughout Ontario. Our deep understanding of flat roofing systems allows us to design solutions tailored to your building’s unique requirements, including re-roof projects, new roof installations, and complex roof repairs.
Our reputation is built on delivering reliable roofing services for commercial and industrial properties. We work closely with property managers and building owners to ensure projects are completed on time, within budget, and to the highest standard.
Whether you’re dealing with water infiltration, aging materials, or ongoing leaks, our team will recommend the most cost-effective and permanent repair solution whether repairs are all that is required, or a roof replacement is needed using top-performing systems like Duro-Last and Goliath.
After your initial roof inspection, we’ll determine if your roof needs a full replacement or if targeted repairs are sufficient. We may recommend flat roof replacement if:
We’ll recommend the best flat roofing system—often a PVC single-ply solution from either Goliath or Duro-Last—to provide a secure, long-term solution.
Selecting the right roofing materials is essential for your building’s durability, energy performance, and value. That’s why we use premium single-ply roofing systems, including:
These materials are engineered to resist punctures, UV damage, and chemical exposure—ideal for Ontario’s commercial and industrial environments.
PVC roofing is among the most popular commercial roofing solutions due to its strength, energy efficiency, and longevity.
Both Goliath Roofing Systems and Duro-Last offer factory-fabricated PVC membranes that reduce installation time, minimize seams, and improve leak prevention. These membranes are flexible, durable, and built to last up to 30 years with proper maintenance.
They also offer excellent performance in retrofit scenarios, allowing us to install a new roof over your existing system when conditions allow—saving time and reducing waste.
Depending on your roof’s condition, we’ll recommend:
Both Duro-Last and Goliath offer membranes that can be installed quickly and securely, helping you save on labor and material costs while protecting your investment.
The Duro-Last system is factory-fabricated to your building’s exact dimensions, reducing field seams and installation errors. Similarly, Goliath Roofing Systems are precision-engineered for consistent performance, strength, and weather resistance.
Both systems offer watertight seams, improved roof installation accuracy, and minimized on-site labor—ideal for large commercial buildings and complex industrial properties.
When installed by a professional flat roofing contractor, a PVC roof system from Duro-Last or Goliath can last 20 to 30 years. These single-ply roofing systems are reinforced, fire-resistant, and flexible enough to handle Ontario’s freeze-thaw cycles and high winds.
They also resist chemicals, grease, and other rooftop hazards common in industrial environments.
Both Duro-Last and Goliath Roofing Systems offer high reflectivity, helping reduce energy bills by keeping buildings cooler in the summer. This translates to significant energy savings and lower HVAC costs over time.
These membranes meet ENERGY STAR® and Cool Roof Rating Council (CRRC) standards, making them ideal for building owners looking to reduce cooling costs and support sustainability goals.
PVC roofs from Goliath and Duro-Last are built for longevity and minimal ongoing maintenance. Fewer replacements mean fewer materials going to landfills over time.
Duro-Last’s “Recycle Your Roof” program ensures old membranes are repurposed, not discarded—further reducing the environmental footprint of your commercial roofing project.
Recyclable roofing materials help reduce construction waste. At end-of-life, Duro-Last membranes can be collected and recycled into new products. This program, combined with the long life of Goliath’s membranes, offers a sustainable solution for industrial and commercial roofing needs.
Yes. PVC single-ply roofing systems from Goliath and Duro-Last are both highly cost-effective.
When used in a retrofit installation, they reduce tear-off, disposal, and insulation costs—plus they require less maintenance and fewer repairs over their lifespan. That means lower repair costs, less downtime, and better long-term ROI for your industrial or commercial building.
Flat roofing costs are influenced by materials, labor, roof size, access, and condition. Here’s a quick look at material-only estimates (per sq. ft.): Costs are estimates only and may vary.
| Roofing Material | Estimated Cost (w/o Labour) |
|---|---|
| 4-Ply Tar and Gravel (BUR) | $1.50–$2.70 |
| EPDM | $0.50–$2.50 |
| TPO | $1.00–$2.50 |
| Modified Bitumen (2-Ply) | $0.70–$2.20 |
| PVC (Duro-Last or Goliath) | $1.10–$2.50 |
For an accurate quote, schedule a free roof inspection. We’ll assess your roofing system and recommend the best-value solution.
Commercial and industrial roofs are not like residential property roofs. They’re often flat and designed to protect the inventory, equipment, the people working in the facility, and their daily operations. Unfortunately, owners and managers of such properties rarely know the specific roofing system they have until the roof begins to deteriorate or leak.
The good news is that Watertite Roofing is a trusted commercial roofing company that offers on-site roof assessment. During this initial roof inspection, we’ll determine the extent of damage and recommend the best roofing services. For instance, minor leaks or cracks can be fixed through targeted flat roof repairs. If the roof damage is extensive, you may need to re-roof your property.
Note that we offer free on-site roof assessments and provide accurate quotations. The quote will indicate the actual roof installation or repair costs and project timeline. Whether your roof requires permanent repairs or replacement, our experienced team will provide superior quality flat roofing services.
Schedule a free consultation today and discuss your low-slope or flat roof needs with a trusted partner that has been offering top-quality flat roofing solutions since 1976.
Watertite Roofing proudly serves communities across Southern Ontario, delivering expert flat roofing solutions with proven reliability. From St. Catharines to Brantford, Hamilton to Dunnville, our certified team brings decades of experience to every project. We understand local needs and tailor our services for lasting results—whether it’s a repair, replacement, or retrofit. With offices conveniently located, we’re never far when your business needs trusted, high-performance roofing.
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See LocationWe are beyond honored to announce that Watertite Roofing – Specialists in Flat Roofing Since 1976 has won two incredible awards at the…
Learn moreWe’re thrilled to announce that we’ve been nominated for two prestigious awards by the Dunnville Chamber of Commerce…
Learn moreAt Watertite Roofing – Specialists in Flat Roofing Since 1976, we’ve been receiving an influx of calls about apparent flat roof leaks due to the recent extreme cold. However, upon inspection, we often find that…
Learn moreWhen it comes to flat roofing, many people think it’s just about the surface. However, a well-installed flat roof requires a more comprehensive approach – one that considers the entire roof envelope. This includes all the interconnected components that work together to protect the building from the elements, such as weather, moisture, and temperature fluctuations. Recently, we had the opportunity to apply this expertise to a well-known local business – a McDonald’s restaurant.
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