Commercial Roofing Vancouver — Flat Roofs & Modified Bitumen

Commercial Roofing Specialists in Vancouver

Millwall Roofing has been serving commercial clients across Vancouver and the Lower Mainland since 1997. From small retail units to larger strata and industrial buildings, our team delivers reliable commercial roofing solutions that keep your business protected.

We understand that commercial roofing projects require coordination around business hours, minimal disruption, and documentation-ready reporting for strata and insurance purposes. Darrell Macdonald oversees every commercial project personally, ensuring clear communication and on-time delivery.

"The crew was professional and respectful of our business operations throughout the project." — Steve Brannon, Google Review

Commercial roof replacement in Vancouver by Millwall Roofing

Flat Roof Installation

Flat roofs are the standard for commercial buildings in Vancouver, but they require expert installation to perform well in the Lower Mainland's high-rainfall climate. Millwall designs and installs flat roofing systems with proper drainage, tapered insulation, and reliable waterproofing membranes.

Complete flat roof installation and replacement
Tapered insulation systems for proper drainage
Waterproofing membrane installation
Roof drain and scupper installation
Post-installation performance reports for strata documentation

Modified Bitumen Roofing

Modified bitumen (Mod Bit) is one of the most reliable flat roofing systems for Vancouver's climate. Highly resistant to moisture, temperature changes, and foot traffic, it provides long-term performance with relatively low maintenance requirements. Millwall installs torch-applied and cold-applied modified bitumen systems to suit different building needs.

Torch-applied and cold-applied systems
Two-ply and single-ply options
Compatible with existing flat roof substrates
15–25 year expected lifespan with proper maintenance
Suitable for strata buildings, retail, and industrial applications

Eavestroughs & Gutters

Commercial eavestroughs must handle higher volumes of runoff than residential systems. Millwall installs and services commercial-grade gutters, downspouts, and leaf guard systems to protect your building's facade, foundation, and landscaping from water damage.

Commercial eavestrough installation and replacement
Downspout sizing and placement
Leaf guard and gutter guard systems
Commercial gutter cleaning and maintenance
Overflow and emergency drain installation

Soffits & Fascia

Commercial soffits and fascia serve both a functional and aesthetic role — protecting the roof edge from water penetration while presenting a finished exterior appearance. Millwall installs and repairs soffits, fascia boards, and metal cladding for commercial properties.

Vinyl, aluminum, and wood fascia installation
Ventilated and non-ventilated soffit systems
Metal cladding and capping
Rotten or damaged fascia replacement

Also see: commercial roof repair and maintenance →

Commercial Roofing FAQ

What is the best roofing system for a commercial flat roof in Vancouver?+

Modified bitumen is one of the most popular and reliable commercial roofing systems in Vancouver due to its excellent waterproofing performance in wet climates, durability, and relative ease of repair. TPO and EPDM membranes are also options. Millwall Roofing can assess your building and recommend the most suitable system for your needs and budget — call 604-763-1930.

How often should a commercial roof be inspected?+

Commercial roofs should be inspected at least twice a year — in spring and fall — and after any major storm events. Regular inspections catch small issues before they become expensive emergency repairs. Millwall Roofing provides commercial roof inspection and maintenance programs tailored to your building.

Can Millwall Roofing work on occupied commercial buildings?+

Yes. Millwall Roofing is experienced in working on occupied commercial buildings with minimal disruption to business operations. We plan work around your schedule, communicate clearly throughout the project, and maintain a clean, safe work site. Contact us to discuss your project.

What Commercial Clients Say

★★★★★

"The crew was professional and respectful of our business operations throughout the entire project."

Steve BrannonGoogle Review

"Darrell provided a thorough inspection report and his team completed the flat roof replacement with minimal disruption."

Paul FrostGoogle Review

"Quality work, on time and on budget. Exactly what you want from a commercial roofing contractor."

Henriette OrthGoogle Review

Commercial Roofing in Vancouver