Watertite Roofing protects Guelph properties with expert flat roof replacements, specializing in commercial, industrial, and institutional facilities that require durable, energy-efficient, and weather-resistant roofing systems.
Watertite Roofing is one of Ontario’s leading and top-rated professional roofing contractors. Since its inception in 1976, we have completed over 6,700 roofing projects, helping residential and commercial property owners install, repair, restore, and replace their flat or low-slope roofing systems.
In 2025, we were awarded Business of the Year and Employer of the year by our local Chamber of Commerce. In 2023 and 2024, Duro-Last awarded Watertite Roofing the Elite Contractor status, and we received the prestigious General Award for our outstanding workmanship and customer satisfaction.
These awards and industry recognitions show that we maintain the highest roofing industry standards for installing, maintaining, and replacing commercial roofing systems. Therefore, if you need a new flat roof for your commercial building or the existing one needs attention, contact us for a free inspection and cost estimate. Here’s why our flat roofing solutions stand out in Guelph:
Our team specializes in replacing flat roofs with high-quality materials and workmanship to prevent future problems.
We provide expert flat roof repair services to fix leaks, cracks, and other damage, ensuring long-lasting protection for your building.
Scheduled maintenance services to keep your flat roof in excellent condition and extend its lifespan.
Need emergency flat roof repairs in Guelph? Our team is known for a rapid response and efficient repair work.
We install our durable PVC membrane directly over existing low-slope metal flat roofs, providing a cost-effective and long-lasting waterproofing solution.
Professional repair and replacement services for skylights to prevent leaks and maintain building integrity.
A high-quality and energy-efficient roof is the protector of your business building or industrial facility. It keeps water and excess moisture out to protect the structural integrity of your building while ensuring the safety of your equipment, products, staff (or tenants), and day-to-day business operations.
Flat roofing systems are widely used on Guelph industrial and commercial properties due to their cost-effectiveness. After all, flat roofs use space efficiently, which limits wastage of roofing materials and requires minimal maintenance compared to most pitched roofs.
As a locally operated flat roofing company, Watertite Roofing has the knowledge to design and proficiently install a new flat roof on your commercial or industrial facility. Indeed, our reputation for quality and state-of-the-art roofing solutions has earned us an average rating of 4.9/5 stars on Google and an A+ rating on the Better Business Bureau.
At Watertite Roofing, our services include flat roof installations for commercial buildings and industrial facilities in different industries. Our team understands that a large warehouse may require a unique flat roof installation technique that may not be applied in a small residential home. Contact us for flat roof installations for:
Our main PVC membrane suppliers are GOLIATH, a trusted Canadian company, and Duro-Last, our long-term partner. Our skilled flat roofing professionals expertly shape and size these high-quality roofing membranes to fit your property’s unique roof structure, ensuring durable and reliable protection.
If you notice that your property’s roof has sustained damage after a storm, is leaking, or has begun breaking down due to aging, contact us. Our timely and professional commercial flat roof repair services can prevent further damage and ensure the safety of commercial and industrial properties in Guelph and the surrounding areas.
Recognizing the earliest signs of flat roof damage can ensure timely and effective repairs. With our help, you can inspect your facility’s flat roof and fix signs of damage. When you notice any of the following flat roof issues, contact us:
Ponding water on the roof: Ponding or pooling water is a significant concern for residential and commercial flat roofs. If water is accumulating on your roof after heavy rains, it suggests poor roof drainage. The pooling water can cause membrane deterioration, widespread leaks, and eventually structural damage. Schedule a thorough roof inspection to identify the cause of the pooling water and fix it. Our team has specialized expertise in assessing and repairing flat roof drainage issues.
Flashing separation: Your flat roof’s flashing protects its vulnerable areas from water and moisture intrusion. When the flashing becomes loose or separated, it can lead to roof leaks and serious water or moisture damage. Our experienced team of expert roofers can inspect your roof and reattach the flashing. If the damage is severe, we may recommend a flashing replacement.
Ridging and blistering: Roofing membrane bubbles and blisters form when excess moisture is trapped under the membrane, forcing it to lift. The leading cause of membrane blistering or ridging is improper installation methods or poor ventilation. Our expert roofers can assess and fix the affected areas.
Other signs of flat roof damage include water spots on the ceiling, membrane issues due to high winds, and a deteriorating roof as your roof ages. At Watertite Roofing, we understand that different factors, such as harsh weather elements, strong winds, and freeze-thaw cycles, can accelerate flat roof damage.
So don’t delay. Ignoring a minor leak or water spots on your ceiling could become a costly problem. Request a thorough inspection today.
If your flat roof has suffered sudden storm damage, leaks, or critical failure, you need quick and professional flat roof repairs. Our team acts quickly to assess and contain the roof damage. We help facility directors, property managers, and commercial building owners to stabilize their flat roofing systems and prevent further damage.
At Watertite Roofing, we understand that the impact of roof leaks, separated flashing, clogged drains, and other flat roofing issues can be both immediate and long-term. We fix sudden leaks and other forms of damage to ensure a seemingly minor issue doesn’t spiral into a full-blown flat roofing problem in the future.
Waiting for too long to replace your commercial property’s flat roof can cost you more money in terms of frequent repairs. Also, recurring leaks and other forms of roof failure can disrupt your operations, lead to tenant complaints, damage your facility, and sometimes trigger insurance issues.
At Watertite Roofing, we inspect commercial flat roofs, assess the extent of damage, and recommend partial or complete roof replacement if the damage is too extensive. If you’re not sure whether to repair or replace your commercial facility’s roof, we’re your trusted partner in assessing your flat roofing needs. We’ll pay attention to the following:
Suppose roof leaks continue even after getting your roof patched several times. This suggests that your roof is failing. Continued water or moisture infiltration into the steel deck, drywall, or insulation can cause mold growth, rot, and structural damage to your building.
Torn membrane, widespread blistering, soft spots, and cracking are some of the common issues with commercial flat roofs. They’re warning signs that your roof’s membrane may no longer protect your commercial or industrial facility efficiently. If left unchecked, these roofing issues open the door to structural roof decay.
Most flat roofs last 15 to 30 years, depending on the roofing material, quality of installation, and maintenance. If your roof has reached the end of its useful life, you may want to consider a complete flat roof replacement. Pushing its limits with frequent repairs may not be cost-effective.
When you’re ready to install, repair, or replace your commercial flat roof, Watertite Roofing will be prepared to help. We have been offering top-rated flat roofing services in Guelph and across Ontario since 1976. Therefore, you can rely on our expert services, quick response, and quality workmanship to ensure your property’s flat roof is functional, energy-efficient, and can last over two decades.
Watertite Roofing offers you the opportunity to stay a step ahead of potential roof leaks and structural damage with our preventive flat roof maintenance. Our proactive approach is proven to prevent extensive damage and maintain the structural integrity of flat roofs for commercial, institutional, and industrial properties.
Therefore, our flat roofing solutions are intended to delay the need for a complete roof replacement. Here’s how Guelph commercial facility owners and managers can benefit from our regular roof maintenance services.
Inspecting and repairing minor damage is cheaper than replacing the entire roof. Our regular inspections and maintenance help identify and fix even minor forms of damage. This can extend the lifespan of your roof significantly and ensure better return on your initial roofing investment.
Regular inspections facilitate early detection of potential leaks, drainage issues, flashing problems, and other flat roofing issues. Our team can fix these issues before they cause significant damage to your roof. This proactive approach to flat roof maintenance can limit the need for emergency repairs or costly replacements.
A professionally-maintained flat roof can boost the overall value of your commercial building or industrial facility. It assures potential buyers of its energy efficiency and quality. If you plan to sell your property in the future, our preventive flat roof maintenance services can give you a competitive edge. Contact us today and get a detailed quote.
The average cost of flat roof replacement and other services in Guelph and across Ontario ranges from $6 to $20 per square foot. That means the roofing cost for a 2,000 square foot flat roof may be $12,000 to $40,000.
It’s crucial to note that the exact cost of installing, repairing, or replacing a commercial or industrial flat roof varies widely depending on several factors. At Watertite Roofing, we exclusively use high-quality flat roofing membranes from Goliath PVC and Duro-Last, our trusted suppliers. For other roofing materials and supplies needed on the roof, we work with a variety of trusted suppliers. Our team will help you choose the best materials based on your property type and budget.
Here are the factors that affect the total cost of a flat roofing project for industrial or commercial buildings in Guelph, Ontario:
Depending on the scope of your project, you may need different categories of materials. For instance, a new roof installation or complete replacement requires decking, underlayment, flashing, roof covering, and more. These materials can drive up the total cost of flat roofing services. The final material installed could be Asphalt and Gravel, TPO, EPDM, or PVC. Here are the estimated costs of these materials:
| Roofing Option | Estimated cost per square foot |
| EPDM (rubber) roofing | $5 to $16 |
| TPO roofing | $6 to $18 |
| PVC roofing | $6 to $20 |
| Modified bitumen | $7 to $20 |
| Asphalt and gravel | $10 to $25 |
The total cost of a flat roofing project will also depend on the cost of labour, the specific work to be done (repairs, installation, or replacement), and the accessibility of your roof. At Watertite Roofing, we recommend that Guelph residents get a quote for flat roofing solutions.
Watertite Roofing is a trusted partner that can complete flat roof repairs, installations, and replacement projects within a short period. We recommend and install the best materials for flat roofs, such as Goliath PVC membranes and Duro-Last. Whether you need repairs for your current roof or other roofing services, contact us today.
Guelph commercial properties trust Watertite Roofing for dependable, long-lasting flat roof solutions. Our skilled professionals take pride in providing tailored installations, maintenance, and replacements that align with the city's unique structural and weather-related requirements. Each system we install is designed to reduce energy use, increase safety, and boost performance over time. Being locally available allows us to respond quickly when your business needs support. Connect with our roofing team today and get started with a trusted partner in building protection.
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