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Commercial Flat Roofing Oakville

We're commercial flat roofing experts in Oakville you can trust. Get reliable, durable, and cost-effective flat roofing services for your commercial buildings and industrial facilities.

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    Oakville’s Top Commercial Flat Roofing Company

    Watertite Roofing is one of the top commercial roofing contractors in Oakville and across Southern Ontario. Since our founding in 1976, we have provided comprehensive residential and commercial roofing services. We specialize in high-quality flat roofing systems, such as the Canadian-made Goliath flat roof system, and ensure the highest level of customer support possible.

    Therefore, if you need a trusted and reputable Oakville commercial roofing contractor to install a new roof, perform minor repairs, or replace an old flat roof, don’t hesitate to contact us. Here’s why we’re still the most preferred commercial roofing company in Oakville.

    Commercial Flat Roofing Oakville

    Over 50 Years of Commercial Roofing Experience

    For over 50 years, Watertite Roofing has been the go-to company for commercial roofing services in Oakville and throughout Southern Ontario. We have successfully completed thousands roofing of flat roofing installations, repairs, and replacements.

    We leverage our extensive building experience to offer expertise and reliable services in every phase of your roof installation, repair, or replacement. Whether you need to fix flat roof leaks or replace damaged sections, you can count on us for expert services.

    Award-Winning Commercial Roofing Contractor

    Watertite Roofing is an A+ rated, BBB-accredited, and award-winning commercial roofing contractor with a long record of service excellence. Our company has earned Duro-Last Elite Contractor status multiple times, as well as the Ontario Contractor of the Year award. These achievements demonstrate our dedication to delivering high-quality workmanship, commitment to customer satisfaction, and dependable roofing services.

    Oakville property owners choose us because we maintain high service standards, follow best practices, and design budget-minded commercial roofs that offer long-term performance.

    Customized Commercial Flat Roofing Solutions

    Every commercial property is unique, and our roofing services are tailored to each building’s specific roofing needs. Our team will assess your roof’s layout, drainage, insulation, and long-term requirements before we recommend suitable flat roof repairs or replacement.

    Our roofing experts will consider factors such as weather exposure, foot traffic, and the specific maintenance needs of your property. This customized approach ensures you receive an efficient flat roofing system that will last for decades.

    In-House Team of Trained & Certified Roofing Professionals

    At Watertite Roofing, we don’t outsource commercial roofing work. Our in-house team of trained and certified roofers handles every phase of roof installations or repairs. The roofing professionals also receive ongoing technical training to stay up-to-date with the latest roofing trends and solutions. For instance, our team recently visited the Duro-Last commercial roof membranes manufacturing facility in Michigan to discuss cleaner and greener roofing technologies.

    This ensures every member of our team understands the latest roofing technologies and installation options. With a skilled team on-site, our clients can benefit from consistent workmanship, safe flat roofing practices, and professional project management.

    Top Quality Commercial Flat Roofing Systems

    Watertite Roofing recommends high-quality flat roofing systems that are efficient and durable. Our partnership with Duro-Last allows us to install advanced flat roofing membranes with proven performance.

    Note that Duro-Last and other top-quality Canada-made flat roofing systems like Goliath Roofing systems can withstand exposure to harsh weather conditions, chemicals, and UV exposure. They also offer cleaner and greener options for commercial properties that prioritize sustainability.

    Comprehensive Warranty

    The commercial roofing materials or systems we recommend typically come with comprehensive warranties, which provide peace of mind. At Watertite Roofing, we provide manufacturer-backed warranties and workmanship coverage for all eligible projects.

    Whether you want to install or retrofit a flat or low-sloped roof, we’re a trusted partner that offers competitive pricing and a comprehensive warranty.

    Cost-Effective Commercial Roofing Services in Oakville

    The roof of any commercial building plays a key role in protecting the entire structure from water and moisture infiltration. That means a flat roof leak can lead to costly repairs if not addressed on time. At Watertite Roofing, we have provided reliable flat roof installations, repairs, and other services in Oakville for nearly five decades.

    Contact us today and get services tailored to your specific roofing requirements. Here are the services we provide.

    Commercial Flat Roof Repair Services

    From our experience, flat roofs for commercial and industrial properties don’t fail all at once. That means there are a few warning signs that your roof is aging or has suffered damage. Pay attention to the following signs of flat roof damage:

    • Stains on the floor, walls, or ceilings may indicate roof leaks
    • Bubbles, blisters, or cracks on the roofing membrane (roof surface)
    • An unexplained spike in your monthly energy bill due to excess moisture and water infiltration
    • Unpleasant smell and mold growth (due to trapped water or excess moisture)
    • Ponding water on your roof surface

    At Watertite Roofing, our repair process begins with a thorough roof inspection and damage assessment to understand the nature of the roof damage. Whether you’re dealing with roof leaks or a deteriorated roof due to natural wear and tear, our professional roofers are ready to help.

    Commercial Flat Roof Maintenance

    Regular inspections and preventive maintenance can extend your roof’s lifespan. Ideally, flat roofs for business properties should be inspected at least twice a year (in the Spring and Autumn). During these routine roof inspections, our team can help identify seemingly minor signs of commercial roof damage that can cause significant and costly damage if not addressed in a timely manner.

    Any signs of damage identified during the routine inspection will be fixed on time to prevent further damage and the need for future repairs. We also provide other services during regular maintenance, such as roof cleaning, to remove debris and keep your roof’s drains clog-free. Remember, keeping your roof drains and gutters clean can prevent leaks and ensure proper drainage.

    Commercial Roof Replacement or Retrofit

    No flat roof damage resolves on its own. Therefore, the tendency to put off commercial roof repairs for as long as possible isn’t a good idea. If the damage is left unattended, it will get worse and lead to extensive damage. At the same time, waiting too long to replace your commercial roof (after repeated repairs) can disrupt your operations, lead to costly damage, and insurance headaches.

    At Watertite Roofing, we’ll first inspect your roof and determine if your flat roof needs replacement or targeted repair services to fix the damage. For instance, if the roof is still leaking or is trapping excess moisture even after a history of repeated repairs, a significant part or the entire roof may have failed.

    Extensive cracking, blistering, or soft spots on your roofing membrane may be a sign that the roof may no longer protect your commercial property. Our roofing contractors will only recommend a retrofit or complete roof replacement services if the current roof is extensively damaged or has reached the end of its expected lifespan.

    What are the Benefits of a Flat Roof for Commercial Properties?

    Most commercial properties, institutions, and industrial facilities in Oakville have flat roofs. These roofing systems are cost-effective, durable, and easy to maintain. Here are the top benefits of flat roofs for business buildings:

    Extra Usable Rooftop Space

    Unlike a pitched roof, a flat roof offers extra space that property managers or owners can repurpose to enhance the value of their property. For instance, a flat roof can be used as a platform for the installation of solar panels and an HVAC system.

    A flat roof can also be transformed into a rooftop garden. Thus, there are endless possibilities when it comes to repurposing the extra space to improve your property’s curb appeal and overall financial value.

    Easy to Access Roofs for Routine Maintenance

    Flat roofs are easily accessible for routine roof inspections, cleaning, and repairs. Most commercial properties have specific access points designed to match the Ontario Building Code requirements. From our experience, roof accessibility is intertwined with safety regulations under the Ontario’s Occupational Health and Safety Act (OHSA).

    Our experienced roofers will ensure your roof is code-compliant during flat roof repairs, retrofit, or replacement.

    Cost-Effective Roofing Solutions

    Retrofitting an existing flat roof or low-slope metal roof with a Duro-Last or Canadian-made Goliath roofing system requires less labour and materials than a complete roof replacement. If the roof deck, structure, and insulation are in good condition, a retrofit or overlay is a cost-effective roofing solution.

    Energy-Efficient Roofing System

    At Watertite Roofing, we recommend the Duro-Last roofing system and the high-quality Canada-made Goliath roofing system. These flat roofing membranes have reflective surfaces that are also UV-resistant. This reduces heat absorption and keeps commercial and industrial buildings cooler during the hot summer months.

    FAQs

    When roofing shingles are installed on flat roofs, rainwater or snowmelt drains slowly, increasing the risk of roof leaks, especially where the shingles overlap. A flat roof requires a monolithic seal, which shingles do not provide.
    Work with the roofing experts at Watertite Roofing to assess factors such as desired durability, local climate, maintenance requirements, and property size. We usually recommend Duro Last PVC membranes and the Canada-made Goliath flat roofing system.
    Yes. Regular flat roof inspection and maintenance help prevent minor leaks and damage from escalating into costly repairs. Timely inspections, repairs, and preventive maintenance can significantly extend the lifespan of your roof.
    The total cost of flat roof replacement, repairs, installation, or routine maintenance in Oakville depends on factors such as materials, labour, and project complexity. Requesting a free quotation is recommended to get accurate pricing and timelines.
    The project duration varies depending on roof size, the type of flat roofing membrane, and weather conditions. Retrofitting a metal roof usually takes less time than removing and rebuilding an entire roof structure.

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      What our customers are saying

      leave review
      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

      In February this year, we had a serious flooding problem at our house coming from an outside flat roof deck and probable freezing / ice damage. As part of researching our options, we learned that identifying and fixing flat roof issues can be very complicated, expensive and problematic for insurance coverage. While WaterTite Roofing was not involved in the original installation of our flat deck, Zachary came to our house the day after we contacted him and provided us with a detailed assessment of the problem, a solution and the cost. While we ended up using a different roofing company, mostly due to insurance complications, we could not have been more pleased or impressed by the professionalism of Zachary and we make no hesitation in suggesting you consult WaterTite / Zachary if you have an issue with a flat roof.

      Don Davidson

      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

      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

      During a heavy rain event, the roof leaked and one of the tenant was concerned about the leak. I called Watertite Roofing and they were on the roof to patch the leak by end of the same day. In the meantime, they did an assessment of the roof and provided a quotation within days for the replacement of the roof. Once the quotation was approved, Watertite Roofing promptly began to replace the roof the following day. The foreman on site for Watertite Roofing was considerate of intrusion to the businesses and their clients. The site foreman was approachable and made changes requested by the landlord. The work was completed in four days and before the next rainfall. Communication with the head office was always pleasant and frequent updates were provided every several days of work progress by the Operations Manager/Estimator. I was pleased with the quick response and the professional manner in which the work was completed ahead of time.

      Silvio Mucciarelli

      Thank you Ibrahim, We really appreciate your Google rating us five stars. Can you share a few words about your experience please as it would be helpful for fellow Googlers. Thank you kindly from Management and Staff

      Ibrahim Jame Mosque

      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

      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

      Zak at Watertite was fantastic! Called him up to get a quote and was very happy with the responsiveness. The work was completed as promised and in a very professional. Would definitely recommend them for any roofing needs.

      D. B.

      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.

      this team was excellent! they repaired our roof (a former elementary school) and did the work on time and within budget. The crew were friendly, professional and cleaned up all during the project work. We have asked them to quote us a second building and look forward to having this repaired. They are the experts in flat roofs. Great work Watertight!

      Joanna Mataya

      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

      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

      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

      our service areas

      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.

      Watertite
      + 1 (905) 774-3598 1333 Hwy 3 E, Dunnville

      Dunnville

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