Commercial roofing is not something you want to leave to chance.
Whether you’re managing a warehouse in Toronto, a storefront in Ottawa, or an industrial facility in Mississauga, the right roofing company can save you thousands in future repairs, energy bills, and potential disruptions to your business.
This is why we have rounded up the top-rated commercial roofing companies in the province, known for experience, performance, and reliability.
If you want to compare roofing quotes for your project, request free quotes from vetted local roofing companies through our platform with zero cost and obligation.
Just fill out the short online form on this page; it takes less than 2 minutes.
Why Choosing the Right Commercial Roofer Matters
When it comes to commercial roofing, you’re not just hiring someone to install or fix a roof. You are choosing a partner who can affect your bottom line, reputation, and long-term building integrity.
The stakes are much higher compared to residential roofing. While a damaged residential roof might inconvenience a family, a failed roof on a commercial building could mean business interruptions, legal liability, and lost revenues. This is especially true for warehouses, retail stores, factories, schools, or office buildings where downtime results in financial losses.
Here’s why hiring the right commercial roofing company is critical:
1. Prevent Costly Downtime
Imagine discovering a roof leak during peak business hours—or worse, having to shut down operations for days because of water damage or unsafe working conditions. The cost of downtime for commercial properties can be substantial, not to mention the loss of customer trust.
The right commercial roofer will:
- Install a roof that’s built to handle your specific building use and traffic
- Offer proactive maintenance plans to catch small issues before they grow
- Minimize disruption during installation or repairs through proper planning and scheduling
2. Ensure Compliance with Building Codes and Safety Standards
Ontario has strict building codes for commercial properties, especially when it comes to fire safety, insulation values, drainage systems, and accessibility. Hiring a low-quality roofer may expose you to risks, including:
- Costly fines or failed inspections
- Legal liability if an injury occurs
- Voided manufacturer warranties
Reputable roofing contractors understand provincial regulations and guarantee code-compliant installations—saving you from unexpected regulatory headaches.
3. Long-Term Performance and Durability
A commercial roof is an investment expected to last 15 to 40+ years depending on the system. But only if it’s installed right the first time. Improper flashing, inadequate slope, or poor material handling can lead to early failure—sometimes within just a few seasons.
Top-tier commercial roofers:
- Recommend systems suited to your climate, building shape, and use
- Follow manufacturer installation guidelines to protect warranties
- Offer workmanship warranties in addition to product coverage
4. Energy Efficiency & Operational Savings
A well-installed roof does more than just shield you from the elements. It helps control your building’s temperature, reduces HVAC strain, and lowers energy bills. For large commercial spaces, this can mean thousands of dollars in annual savings.
Energy-efficient options like TPO, PVC, and reflective coatings are only as good as their installation. A high-quality roofer will also recommend proper insulation and drainage to prevent issues like ponding water or heat loss.
5. Access to Better Materials and Technology
Not all roofers are certified to install advanced commercial systems such as single-ply membranes, vegetative roofs, or solar-ready assemblies. Choosing a certified contractor ensures access to:
- Higher-quality roofing materials with longer lifespans
- Manufacturer-backed warranties lasting 20–30 years or more
- Advanced tools and diagnostic equipment (e.g., infrared leak detection)
6. Post-Installation Support
The best roofers don’t disappear after the last shingle or membrane is laid. They offer:
- Clear documentation and maintenance guidelines
- Follow-up inspections
- 24/7 emergency repair services if needed
With the right company, your commercial roof won’t just be installed; it can be managed and protected throughout its lifespan.
The key point is that a commercial roofing project is a major investment, not just in materials and labour, but also in the continuity and safety of your business. Therefore, don’t just go with the cheapest quote. Choose a company that’s experienced, transparent, and committed to doing the job right—because the roof over your business protects everything underneath it.
Would you like to find the best roofing company in your city? Just fill out the short online form on this page and get connected to top roofers near you.
What to Look For in a Commercial Roofing Company
Before we talk about top roofing companies, here are a few things you should always check:
- Experience in commercial systems (TPO, EPDM, metal, BUR, etc.)
- Licensing and insurance (WSIB coverage, liability protection)
- Customer reviews
- Warranties on labour and materials
- Emergency service availability
- Maintenance programs to extend roof life
Here are 5 of the top commercial roofers in Ontario known for their experience, reliability, and track record.
1. Canadian Industrial Roofing
This roofing company’s headquarters is located in Toronto. It serves the GTA, Hamilton, Kitchener, and Ottawa. It specializes in flat roofing, industrial buildings, TPO systems, and torch-on systems.
Canadian Industrial Roofing has built a solid reputation for handling large-scale commercial and industrial projects across Ontario. From massive distribution centers to retail plazas, their experienced roofing crew knows the unique demands of commercial clients.
Why does it belong to the top 5 roofers in the province?
- Decades of experience in flat roofing systems
- Strong safety track record
- Preventative maintenance programs
- 24/7 emergency response team
2. Roofers Elite Ontario
This roofing company’s headquarters is in Ottawa. It serves Ottawa, Kingston, and Eastern Ontario, providing commercial reroofing, metal roofing, and waterproofing.
If you need a good commercial roofer in Eastern Ontario, this company is a great choice. They have done most types of projects including government buildings, schools, and office complexes.
Roofers Elite Ontario is among the best commercial roofers in the province because:
- They are certified installers of Firestone and GAF systems
- They are known for clean work sites and punctual project completion
- They are skilled in sloped and flat commercial roofing systems
- They offer infrared roof scanning for leak detection without having to tear up your roof
3. Advanced Roofing Solutions Inc.
This roofing company’s head office is in Mississauga and it serves the Greater Toronto Area, London, Barrie, and more. It specializes in green roofing, commercial flat roofs, EPDM, PVC, and TPO.
If you are looking for an energy-efficient or eco-friendly commercial roof, this company is one of the few in Ontario that offers green roofing systems.
They excel in the field because of their expertise in sustainable roofing systems, and custom insulation and drainage solutions.
Green roofing systems can reduce cooling costs by as much as 30%.
4. Titan Commercial Roofing
With head offices in Hamilton, this roofing company serves Hamilton, London, Burlington, and Niagara.
It specializes in re-roofing, coatings and restoration, and industrial roofing systems. It is popular for older commercial buildings that need restoration or a full roof replacement.
They offer roof coatings that extend roof life for 10 years or more, and offer financing options for large-scale projects.
5. ProShield Roofing & Sheet Metal
This roofing company’s head office is located in Toronto and serves the whole province of Ontario with satellite crews.
It specializes in custom sheet metal fabrication, commercial roofing, and metal roofing systems.
The company excels in the field because they specialize in metal and custom commercial roofing systems. Buildings with unusual or unique architectural designs on steep slopes will find their custom metal work ideal.
Other roofing companies worth mentioning in Ontario include Cherry Roofing and Waterproofing, Ontario Roof Coatings, and EcoFlat Roofing.
Connect with top commercial roofers in your area by completing our brief online form to receive tailored quotes at no cost or obligation.
What Do Commercial Roofs Cost in Ontario?
One of the most common questions business owners and property managers ask is: “How much will a new commercial roof cost me?”
The answer depends on several factors, but understanding how roofers estimate the price of a project will help you prepare a realistic budget.
Commercial roofing costs vary significantly based on:
Factor | Effect on Commercial Roof Cost |
| Roof Size and Complexity | Large roofs are more expensive but the cost per square meter can decrease with scale. Skylights, multiple levels, and HVAC units increase labour costs and the total cost. |
| Type of Roof | EPDM, TPO, metal, BUR, and coatings all have different material and installation costs. Some of these are more labour-intensive and expensive. |
| Roof accessibility | High-rise roofs or hard-to-reach roofs require scaffolding and cranes which increase the overall cost. |
Roof condition | Removal of the existing roof, deck repairs, or mould remediation can increase the cost of the project. |
| Insulation | Ontario’s climate requires strong insulation of R-values from 20 to 30 which help to save energy in the long term but increase upfront expenses. |
| Local Permits & Codes | Toronto, Ottawa, and other municipalities have specific permit fees and other requirements that affect the cost of the project. |
| Warranty & Workmanship Guarantee | Some high-end roofing companies may charge extra for longer warranties but they often provide better or longer protection. |
The following table provides the average costs of a commercial roof based on roof type to guide you in preparing a budget for your roofing needs.
Type of Roof | Average Cost Per Square Foot | Average Lifespan |
EPDM | $5 to $9 | 20 to 25 years |
TPO | $6 to $10 | 15 to 20 years |
Built-up roofing | $6 to $12 | 20 to 30 years |
Modified Bitumen | $5 to $9 | 15 to 20 years |
Metal Roofing | $10 to $20++ | 40 to 50 years |
PVC Roof | $7 to $11 | 20 to 30 years |
Roof Coatings | $2 to $4 | 5 to 10 years |
Please note that location, availability of the contractor, and seasonal demand can affect the overall cost of the project.
Don’t just pick the lowest quote you can find. Compare warranties and check on insulation and maintenance.
With a high-quality commercial roof installation, you can have peace of mind and feel assured that your roof will last a very long time.
Tips to save on Commercial Roofing Expenses in Ontario
A commercial roofing project is a major financial commitment, but that does not mean you have to break the bank.
Whether you’re replacing an aging roof or planning a new installation, there are ways to reduce costs without sacrificing quality or safety. From timing your project right to exploring alternative materials and rebate programs, the tips below can help you make the most of your budget while still getting a high-performance roof that lasts.
1. Consider getting roof coatings rather than full replacements if your roof is aging but still structurally sound.
2. Book during non-peak season (late fall or early spring) to get lower rates and more available contractors to choose from.
3. Get multiple quotes and compare warranties, scope of work, price, and reviews.
4. Inquire about energy rebates from the Ontario government or utility providers for reflective or insulated systems.
By taking a strategic approach by scheduling a roof installation off-season and comparing multiple quotes, you can potentially reduce the cost of your commercial roof.
A good contractor will guide you in opportunities to save on your expenses while meeting standards of safety, performance, and durability.
New Roof vs. Roof Repair: When to Replace a Roof
Repairs could cost from $500 to $5,000, depending on the severity of your roof’s condition. When do you repair a roof or just choose a new roof installation?
If your roof is more than 15 years old and is leaking repeatedly, the roof may have structural damage. It could be more practical to install a new roof than continue to use patch-over solutions.
While a new roof is a huge investment, you can recover the cost over time because of a longer lifespan, durability, and energy savings.
Benefits of Hiring Professional Commercial Roofers in Ontario
When it comes to protecting your commercial property, working with a professional roofing contractor isn’t just convenient; it is truly a good investment.
Ontario’s climate, building regulations, and commercial roofing systems all require specialized knowledge and experience. Here are the top benefits of hiring a qualified commercial roofing contractor in Ontario:
- Increase in Property Value: Durable and well-maintained commercial roofs boost the value of your property.
- Code Compliance & Safety: Commercial buildings anywhere in Ontario must follow strict codes, fire ratings, and safety standards. By hiring professionals, you can be confident that your roof is fully compliant, thus reducing the risk of fines, insurance issues, and legal complications.
- Efficient Management: In commercial operations, time is gold. Roofing contractors know how to minimize disruptions to your operations and meet deadlines so your business can continue to run efficiently.
- Long-term Savings: Regular maintenance of your roof can save you a lot of money on repairs. A good commercial roof can also lower your energy bills.
Hiring a qualified commercial roofer is not only about doing a good job; rather, it is ensuring the project is done right so that your business investment is protection for many more years.
Find a Commercial Roofer Using Our Free Quotes
Choosing the right commercial roofer in Ontario can be stressful, time-consuming, or overwhelming.
With dozens of companies across Ontario claiming to be the best, it’s hard to know where to start. That’s where we come in.
Instead of spending hours researching contractors, calling for estimates, and sorting through online reviews, let us do the heavy lifting for you at no cost.
With our free commercial roofing quotes from our network of reputable contractors, you can:
- Save time by filling out just one form
- Get matched with licensed, insured, and vetted roofing pros near you
- Compare multiple quotes and service options side by side
- Avoid scams or low-quality contractors—we screen every roofer in our network diligently
Start your project with confidence, knowing you’ve found a trusted expert. Are you ready to begin comparing competitive bids for your project?
Fill out the short online form below to receive free, no obligation commercial roofing quotes for your project.