Watertite Roofing offers top-notch flat roof replacements tailored to meet the diverse needs of commercial, institutional, and industrial facilities.
At Watertite Roofing, we use high-quality flat roof replacement options, such as Duro-Last single-ply roofing system and the Canada-made Goliath PVC flat-roofing system.
Commercial, institutional, and industrial flat roofs are constantly exposed to harsh climate conditions, such as intense sunshine, UV radiation, heavy rains, and winter weather. Over time, harsh weather conditions can cause extensive blistering of the roofing membrane, cracks, and general flat roof deterioration.
Extensive damage can affect your roof’s ability to protect your industrial or commercial building from water leaks or moisture penetration and support the structural integrity of the building. While flat roof repairs may prevent immediate water infiltration, the experts at Watertite Roofing recommend flat roof replacement if your roof has deteriorated significantly. Here are the signs we pay attention to to determine if your roof needs replacement;
With an A+ BBB rating and more than 50 years of experience in the roofing industry, Watertite Roofing has become Ontario’s trusted specialist in flat roof installations, repairs, replacements, retrofits, and maintenance services. For property owners, this means working with a roofing contractor that combines proven expertise with modern roofing solutions.
From Toronto and Hamilton to Mississauga, Burlington, Etobicoke, Niagara Falls, and St. Catharines, Watertite Roofing provides tailored solutions for every roofing need. We understand the diverse flat roof challenges posed by Ontario’s weather and building requirements. That’s why we focus on using the best materials like Duro-Last roof membranes to ensure watertight flat roofs.
Therefore, property owners can rely on us to replace their damaged flat roofs, reduce risks of water damage, and ensure uninterrupted business operations through dependable flat roof replacements and maintenance services.
Our team of certified flat roofing professionals brings decades of combined experience to every project we undertake. We use advanced roofing techniques and the right materials to install, repair, or replace roofing systems to ensure your new roof can withstand Ontario’s toughest weather conditions.
Each member of our team undergoes professional training and a thorough certification process to ensure they can handle roof repairs, installation, maintenance, and replacements successfully. When you choose Watertite Roofing, you partner with roofing experts who understand the critical importance of a leak-free flat roof.
Watertite Roofing has built its reputation on consistent results. We have more than 6,700 completed projects, and over 78% of our clients are from referrals or repeat clients. Also, we’re recognized as Ontario’s #1 flat roofing specialist and have maintained a 4.9-star average on Google. Thus, our reputation for quality flat roof repairs, installations, maintenance, and replacement speaks for itself.
Industry recognition has further highlighted our dedication to offering cost-effective flat roof replacements and other roofing solutions. In 2020, we received ongoing service awards and earned the status of Duro-Last Elite Contractors. We also secured the Duro-Last Elite Contractor designation once again in 2023, along with the General Award for Outstanding Achievement in quality workmanship and customer satisfaction.
In 2024, our team was once more honored with the Duro-Last Elite Contractor status and the prestigious General’s Award at the Contractor Awards Gala in Hollywood, California. These milestones reflect our technical expertise in flat roofing and our unwavering commitment to quality and customer trust.
Sometimes, flat roof repairs aren’t enough. When you’re dealing with extensive roof damage, structural damage to the decking, or your roof is old, we may recommend flat roof replacement. Our experienced flat roofing experts will perform a thorough roof inspection to assess the nature and extent of the roof damage. We’ll also recommend repairs, or partial or complete replacement, particularly using the Duro-Last roofing system. Here’s why we recommend this system for flat roofing projects.
The Duro-Last flat roofing system is versatile and allows for various installation methods to match different roofing needs. For instance, our roofing contractors can overlay or retrofit this flat roofing system. This installation method is ideal for projects that involve an existing roofing substrate that’s dry and structurally sound.
Overlying or retrofitting allows our roofers to install the Duro-Last or other Canada-made roofing membranes like the Goliath system directly over an existing roof substrate. This roofing approach saves significant money on the necessary materials and labor. It also minimizes disruption to your facility’s daily operations.
Suppose the existing roof substrate is saturated with water or shows signs of extensive damage. In this case, our roofing professionals may recommend replacement. Such a roofing project requires us to remove all existing roofing materials and insulation before installing the Duro-Last single-ply membrane or other Canada-made roofing system.
Retrofitting an existing roof with a Duro-Last membrane extends the lifespan of the roofing system and delays the need for another replacement. The Duro-Last flat roofing membrane is known for its durability. Thus, it provides consistent protection against harsh weather for decades.
This long-term performance reduces ongoing maintenance costs and the need for frequent flat roof replacement. Therefore, using top-quality, time tested, flat roofing materials offers real financial value to industrial and commercial building owners.
Duro-Last flat roofs are engineered for energy efficiency. This roofing system has UV-resistant, reflective surfaces that reduce heat absorption and keep buildings cooler in summer. This lowers overreliance on HVAC systems, resulting in reduced energy use and lower utility bills.
In addition, commercial flat roofs require minimal maintenance because the membrane is resistant to mold, mildew, and algae growth. Its smooth surface also prevents debris buildup and drainage system issues. When maintained properly, these roofs are energy efficient and durable.
Retrofitting an existing roof with a Duro-Last membrane helps conserve resources by extending the service life of your current roofing system. Instead of completely tearing off your existing roof, the overlay method allows us to install the new roofing membrane on top of the existing substrate (if it’s in good condition).
This flat roof installation enhances performance and durability without requiring large quantities of new roofing materials. Therefore, it lowers the overall environmental footprint of a roofing project. Remember, we only recommend complete roof tear-off and replacement if, after a thorough inspection, we determine that your flat roof is extensively deteriorated.
The “Recycle Your Roof” initiative from Duro-Last gives property owners an environmentally responsible option for roof disposal. Instead of sending old roof membranes to landfills, this program collects and recycles them for reuse in new products.
The program keeps old roofing materials away from the waste stream. Thus, it supports a circular approach to flat roofing, a process that gives used roofing membranes a second life. This reduces landfill burden and demonstrates a clear commitment to sustainability.
The Duro-Last roofing system and Canada-made Goliath roofing membranes we recommend are engineered to withstand even the harshest weather conditions. For instance, the Duro-Last system has heat-welded seams and a watertight design that offers superior protection against leaks.
Unlike most flat roof systems with vulnerable joints and seams, Duro-Last flat roof membranes offer a watertight barrier against water leaks and moisture infiltration. Thus, your commercial property or industrial facility will be protected from water damage. Remember, the PVC membrane is resistant to tears, punctures, and other forms of roof damage.
Duro-Last ensures a higher level of customization for easier flat roof installation or replacement. Once we inspect and determine that a retrofit or complete replacement is necessary, we may source custom-sized Duro-Last roofing sheets. This reduces roofing seams.
Further, we utilize custom-fitted accessories for various roofing details such as vents, skylights, roof curbs, and stacks. This customized approach to flat roof installation or replacement eliminates overlaps and gaps common in traditional flat roofs. It reduces the risk of water or moisture infiltration and extends the lifespan of commercial flat roofs.
At Watertite Roofing, we’re committed to offering superior flat roof replacements and other roofing solutions that combine innovative technology with quality craftsmanship. We leverage our 50 years of combined experience and wealth of flat roofing knowledge to ensure that owners of industrial facilities, commercial properties, and residential homes can get the best value for their investments in flat roof replacement.
Not every flat roof problem means you need to tear down the current roof and install a new one. Whenever you think there’s an issue with your roof, let our roofing experts carry out a thorough flat roof inspection. In many cases, targeted flat roof repairs can fix small leaks or other forms of isolated damage and restore your roof’s performance.
Here’s when we recommend flat roof repairs;
There are times flat roof repairs won’t cut it. Any minor leaks and small cracks we identify during regular inspections can be fixed through targeted repairs. However, when your flat roof has deep structural issues, we may recommend a full flat roof replacement. Here’s when complete replacement makes sense.
Nearly 45% of the total cost of replacing a flat roof is associated with materials. Therefore, the specific materials you need for your roofing project will significantly affect the total cost of your flat roof replacement. Work with our team to determine the specific materials you need, their cost, and how to source them.
Here are the estimated costs of common materials for flat roofs.
| Type of flat roof membrane | Average cost of materials (w/o labour) |
| EPDM (Ethylene propylene diene monomer) | $0.50–$2.50/ sq.ft. |
| PVC (Polyvinyl chloride) | $1.10-$2.50/sq.ft. |
| Modified bitumen | $0.70–$2.20/ sq.ft. |
| TPO (Thermoplastic polyolefin) | $1.00–$2.50/ sq.ft. |
| Asphalt & gravel built-up-roofing (BUR) | $1.50–$2.70/ sq.ft. |
The total cost of flat roof replacement in Toronto depends on many factors. Therefore, it’s best to schedule a free consultation and get an accurate quote.
Whether you need a flat roof replacement for your commercial, residential, or industrial building, you can count on us to use high-quality materials to ensure your new roof is durable. Contact us for an initial roof inspection and an accurate estimate for costs and project timeline.
Schedule a free consultation today and let our professional roofers assess your roof.
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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