Guycan Ltd

The Commercial Roofing Company Ontario Trusts.

Expert industrial roofing solutions tailored for longevity and durability. From comprehensive flat roof installations to 24/7 emergency repairs, Guycan Ltd. is your partner in asset protection.
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  • Licensed & Insured in Ontario
  • 20+ Years of Industrial Experience
  • Certified Master Installers
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Flat Roof
Replacement
Commercial Roof
Leak Repair
Single-Ply
PVC Roofing
Modified Bitumen
2-Ply Roofing
Industrial
Metal Roofing
Tar And Gravel
4-Ply Roofing

We use only premium industry-standard materials

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Your Premier Roofing Company for Commercial & Industrial Projects

When searching for a reliable roofing company in Ontario, you need a partner who understands the unique climate challenges of our region. Guycan Ltd. has established itself as a leader in the commercial roofing sector by delivering precision, safety, and unmatched durability.

Whether you manage a manufacturing plant in the GTA, a warehouse in Ottawa, or a retail complex in Hamilton, our certified teams provide comprehensive roofing services designed to minimize downtime and maximize asset value. We don't just fix roofs; we provide long-term building envelope solutions.
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guycan commercial roofing service building types
WHAT WE DO

Comprehensive Commercial Roofing Services

Protect your commercial property with expert flat roof inspections, repairs, replacements, and maintenance from a reputable roofing company.

Repairs & Leak Detection

Advanced thermal imaging and moisture detection to pinpoint leaks accurately. Our rapid response teams fix issues before they damage your inventory.
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Industrial Re-Roofing

Complete tear-off and replacement services for aging industrial roofs. We manage the logistics to ensure your daily operations continue uninterrupted during the project
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commercial roofing replacement on TD Bank Roof

New Construction Roofing

Partnering with general contractors and architects across Ontario to install high-performance roofing systems on new commercial developments.
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Types of Commercial Roofing Systems We Install

As a top-tier roofing company, Guycan Ltd. is certified to install a wide variety of flat and low-slope roofing systems. We help you choose the material that offers the best ROI for your specific building structure.
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metal commercial flat roofing system on building
Polyvinyl Chloride

PVC

Single-ply reflective roofing membranes that provide excellent heat resistance and energy efficiency. Ideal for Ontario summers to reduce cooling costs.

Ethylene Propylene Diene Monomer

EDPM

Extremely durable synthetic rubber roofing membrane. Known for its ability to withstand Ontario's freeze-thaw cycles and hail.

Modified Bitumen

Mod-Bit

Evolution of asphalt roofing. Reinforced with polymer modifiers for superior strength and flexibility. Great for high-traffic roof areas.

Built-Up Roofing

BUR

Traditional tar and gravel roofs. Provides multiple layers of protection and excellent thermal insulation properties.

Which System is Right for You?

Selecting the right system depends on chemical exposure, foot traffic, budget, and insulation requirements. Don't guess—get a professional assessment.

Free Roof Evaluation

Our representatives will inspect your current substrate and recommend the perfect system.
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Proactive Preventative Maintenance Plans

Extend the lifespan of your roof and avoid costly emergency replacements. As a full-service roofing company, we offer tailored maintenance programs.
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Our Flat Roof Maintenance Services

Regular Roof Inspections

Our experienced technicians will conduct thorough inspections to identify potential problems before they become serious.

Roof Cleaning

We'll remove dirt, debris, and leaves from your roof to prevent clogs and water damage.

Sealing

We'll seal any cracks or leaks to protect your roof from moisture and prevent further damage.

Drainage Checks

We'll ensure that your roof's drainage system is functioning properly to prevent water buildup and ponding.

Customer Satisfaction Focused

We don't just finish the job; we ensure you are completely satisfied. Communication is key, and you will have a dedicated project manager. With years of experience and a commitment to excellence, we deliver reliable, long-lasting solutions tailored to your specific needs.

On-Time & On-Budget

Commercial projects run on tight schedules. We respect your timeline and provide transparent pricing with no hidden fees.

Safety First Approach

Our team adheres strictly to MOL (Ministry of Labour) safety standards. We protect your property, your employees, and our crew. With years of experience and a commitment to excellence, we deliver reliable, long-lasting solutions tailored to your specific needs.

The Choice of Industry Leaders

Our commercial roofing services are trusted by some of the most recognizable brands in the industry. With years of experience and a commitment to excellence, we deliver reliable, long-lasting solutions tailored to your specific needs.
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View Portfolio

Visit our portfolio to view photos and case studies of our completed projects.

At Guycan ltd, we're proud of our extensive experience in commercial roofing projects. Our team has successfully completed a wide range of projects, from small-scale repairs to large-scale replacements.
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scarborough flat roofing company white roof on 36 lee centre dr
after picture of commercial flat roof replacement
pvc-roof-replacement
Foody World White PVC Membrane Flat Roof by Guycan
Tiger Auto Parts Solar Panel on White PVC Commercial Roofing

Reliable and experienced

Our team has over 50 years of experience in the commercial roofing industry,
providing us with the knowledge and skills to handle any project, big or small

Frequently Asked Questions

How do I know if my commercial roof needs replacement?

Signs include persistent leaks, pooling water that doesn't drain within 48 hours, blistering on the membrane, or skyrocketing energy bills. We provide a thorough inspection to determine if repair or replacement is more cost-effective

What types of warranties do you offer?

As a certified roofing company, Guycan Ltd. offers both manufacturer warranties (covering materials for 15-30 years) and our own workmanship warranty to ensure your peace of mind.

Can you install a roof without disrupting my business?

Yes. We specialize in minimally invasive installation techniques. We coordinate noise-heavy work around your schedule and maintain strict safety perimeters to keep your staff and customers safe.

 

Questions?
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Ready to discuss your roofing project?
Contact us today for a free estimate.
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Areas we serve

Toronto

Durham

  • Ajax
  • Oshawa
  • Pickering
  • Uxbridge
  • Whitby

Peel

Halton

  • Burlington
  • Oakville

York

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