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Commercial Flat Roofing Specialists

Commercial Flat Roofing

TPO, EPDM, and modified bitumen systems built for durability, weather resistance, and long-term performance on low-slope and flat commercial roofs.

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Commercial flat roofing installation

Flat Roofing Systems for Commercial Properties

TPO, EPDM, and modified bitumen systems built for durability, weather resistance, and long-term performance on low-slope and flat commercial roofs.

Our certified roofing teams have installed and maintained flat roofing systems on commercial buildings of all sizes — from small retail units to large industrial facilities. We work with the leading membrane manufacturers to ensure your flat roof meets the highest performance standards.

Every installation begins with a thorough assessment of your building's drainage, insulation, and substrate condition. We design each system to maximize lifespan, minimize maintenance costs, and protect your investment for decades to come.

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Commercial Flat Roofing Built to Last

Proven membrane systems, expert installation, and ongoing maintenance — everything your flat commercial roof needs.

TPO Membrane

Thermoplastic polyolefin roofing offers excellent heat reflection, energy efficiency, and strong resistance to UV, ozone, and chemical exposure.

EPDM Rubber Roofing

Durable synthetic rubber membranes that perform exceptionally well in cold Canadian climates, offering flexibility and proven long-term weather resistance.

Modified Bitumen

Torch-applied or cold-applied modified bitumen systems provide multi-layer protection and excellent puncture resistance for high-traffic commercial roofs.

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Drainage Solutions

Proper drainage design is critical for flat roofs. We engineer slope and drainage systems to eliminate ponding water and protect your building envelope.

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Rooftop Equipment Flashing

Expert flashing and sealing around HVAC units, skylights, vents, and penetrations — the most common source of commercial flat roof leaks.

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Preventive Maintenance

Scheduled inspections and maintenance programs to catch issues early, extend membrane life, and protect your warranty coverage.

Commercial Flat Roofing Projects

TPO, EPDM, and modified bitumen installations across the Greater Toronto Area.

Commercial Flat Roofing FAQs

Common questions about flat roofing systems for commercial properties.

The best system depends on your building's use, climate exposure, budget, and existing rooftop equipment. TPO is popular for its energy efficiency and weldable seams. EPDM is a proven performer in cold climates. Modified bitumen offers excellent durability in high-traffic situations. We'll assess your building and recommend the system that provides the best long-term value.
With proper installation and regular maintenance, TPO and EPDM systems typically last 20–30 years. Modified bitumen systems can last 15–20 years. Factors like UV exposure, rooftop traffic, drainage quality, and maintenance frequency all affect lifespan. A preventive maintenance program can significantly extend the life of any membrane system.
In some cases, yes — a recover (overlay) installation can save on tear-off costs. However, this depends on the condition of the existing substrate, the number of existing membrane layers, and local building code requirements. We'll inspect your roof and advise whether a full tear-off or a recover installation is the right approach for your situation.
Ponding water is the primary enemy of flat roofs. We address drainage through proper slope engineering (tapered insulation), correctly sized and positioned interior drains, and secondary overflow drains. During installation we verify that water flows toward drains rather than pooling. If your existing roof has drainage issues, we can redesign the drainage system as part of a re-roofing project.

Ready to Upgrade Your Commercial Flat Roof?

Contact Top Choice Roofing for a free commercial roofing assessment anywhere in the Greater Toronto Area.

Get a Free Estimate 📞  (416) 555-0100