Toronto & GTA's Most Trusted Commercial Roofing Experts
Protecting businesses across Mississauga, Toronto, and the Greater Toronto Area for over 38 years. Flat roofing, repairs, maintenance & sheet metal specialists.
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Top Reasons to Choose Us
Commercial roofing expertise backed by decades of experience, premium materials, and an unwavering commitment to quality.
Exceptional Craftsmanship
Our skilled roofers deliver precision work on every commercial flat roof project across the GTA.
Premium Quality Materials
We source only top-grade BUR, EPDM, TPO, and PVC roofing systems from trusted manufacturers.
Timely Project Completion
We respect your schedule and budget, completing every project on time with minimal disruption.
Transparent Pricing
Honest, detailed estimates with no hidden fees. Know exactly what you're paying for from day one.
Customer-Centric Approach
From first call to final inspection, we prioritize your satisfaction and peace of mind.
Proven Track Record
38+ years serving Mississauga, Toronto, and the GTA with hundreds of successful projects.
Why GTA Businesses Trust Us With Their Roofs
Top-Line Roofing & Sheet Metal Inc provides high-quality roof installation, repair, restoration and maintenance services. With over 38 years of experience serving industrial, commercial, governmental, and institutional clients across Mississauga, Toronto, and the Greater Toronto Area, we ensure honesty, reliability, and quality in every project.
Top-Line Roofing at a Glance
Decades of experience delivering commercial roofing excellence across the Greater Toronto Area.
Kilometres of roof installed
Skilled Canadian employees
Roofing repairs completed annually in the GTA
Hydro savings with green roofing systems
Pounds of sheet metal installed annually
Years proudly serving Ontario since 1988
What Our Clients Are Saying
Real feedback from businesses across the Greater Toronto Area.
“Great roofers, great people proper job”
Johnny T.
Google Review · 2 months ago“I had an excellent experience with Top Line Roofing, and I can’t recommend them highly enough. From the very first interaction, everything was handled with professionalism and care. The receptionist stood out immediately—she was incredibly patient, kind, and genuinely helpful, taking the time to answer all my questions and make the process smooth from the start. The rest of the team was just as impressive. Every staff member I interacted with was friendly, respectful, and clearly dedicated to doing quality work. It’s rare to come across a company where *everyone* is so consistently pleasant and easy to deal with. Beyond their great customer service, the workmanship and attention to detail were outstanding. They were reliable, efficient, and clearly take pride in what they do. If you’re looking for a trustworthy company that truly values its customers, Top Line Roofing is an excellent choice.”
Victoria S.
Google Review · 6 months ago“The best in the industry. Professional, punctual and efficient. Would not recommend anyone else!”
Andreia R.
Google Review · 2 years ago“Best of the best!”
Andreia L.
Verified Client“Jason, the owner a responsive professional that cares about his clients and their demands. Thank you for your follow up and being understanding Jason!”
Golnar A.
Verified Client“Topline redid all the roofs in our complex. Haven't had a leak 16 years running. These guys are the best.”
Peter M.
Verified Client“I received a quote super fast and they explained all my options thoroughly. I had them install roofing on my entire building. Quality and service can't get better with these guys! ”
Jake
Verified ClientFrequently Asked Questions
Have questions about commercial roofing in the GTA? We've got answers. Can't find what you're looking for? Get in touch.
How much will a new commercial roof cost?
+How do I know if my business needs a new roof?
+Do you offer emergency roofing repair services?
+What types of commercial roofing systems do you install?
+Which areas in the GTA do you serve?
+Do you provide warranties on your roofing work?
+How long does a commercial roof installation take?
+Do you do roofing repairs in the winter?
+Our Partners & Suppliers
We work with the industry's leading manufacturers and suppliers to deliver premium roofing solutions.
Our Certifications
See Our Latest Projects on Instagram
From flat roof replacements to architectural sheet metal, see the jobs our crews are finishing across the GTA.
@toplineroofing1988
🏥 PROJECT SPOTLIGHT | TRILLIUM HOSPITAL
We’re proud to share that Top-Line Roofing & Sheet-Metal Inc. is currently working on a roofing project at 150 Sherway Drive in Mississauga.
Healthcare facilities require dependable roofing systems, careful coordination, and a strong commitment to safety. Our team is dedicated to delivering quality workmanship while supporting the needs of an active healthcare environment.
Since 1988, we’ve been helping protect the buildings our communities depend on.
🔹 Commercial | Industrial | Institutional Roofing
📍 Mississauga, Ontario
🌐 www.toplineroofing.ca
Built on Experience. Focused on Protection.
WHY CLIENTS CHOOSE TOP-LINE
✔ Established in 1988
✔ Commercial Roofing Specialists
✔ Experienced Tradespeople
✔ Emergency Response
✔ Quality Materials
✔ Proven Results
Built on Experience. Focused on Protection.
For over three decades, our reputation has been built one roof at a time.
A proactive maintenance plan costs less than a major roof replacement. Ask about preventative maintenance programs! 📞🆘
The difference between a roof that lasts and one that fails is often found in the details.
Roof emergencies don’t wait for business hours. Neither do we. 🆘🚨
RoofLeak
PROTECTING ONTARIO’S BUILDINGS SINCE 1988
A roof is one of the most valuable assets a building owner has. Since 1988, we’ve helped clients maximize roof performance, reduce downtime, and protect their investments.