Commercial

Commercial Roofing

Low-slope and flat roofing systems that protect your assets, your employees, and your customers.

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White TPO membrane roof on a commercial building

When it comes to your business or commercial property, the roof plays a vital role in protecting your assets and ensuring the safety of your employees and customers. Choosing the right commercial roofing system is a crucial decision — and Custom Design Roofing can guide you through selecting the best roof for your specific needs.

Systems
TPO · PVC · EPDM · Modified bitumen
Certified
Versico single-ply applicator
Scheduling
After-hours & phased work
Compliance
Code and inspection ready

Understanding the basics of commercial roofing

Navigating commercial roofing demands a clear understanding of what sets it apart from residential projects. The expansive square footage of commercial properties means these systems are larger and involve design considerations unique to the commercial sphere. Materials such as modified bitumen, TPO, and EPDM rubber are selected for durability and suitability to large-scale applications.

Commercial roofs tend to be flat or very low slope, which presents specific challenges for water drainage and weather resistance — especially important in our rainy climate. This requires a strategic approach to ensure longevity and function.

Commercial projects are also governed by a distinct set of building codes and regulations that vary by location. The expertise of a seasoned roofing company, well-versed in those regulations, becomes invaluable.

  • TPO and PVC heat-welded single ply
  • EPDM rubber membrane
  • Modified bitumen and torch-down
  • Metal roofing for low-slope structures

Choosing the right system for your building

The right assembly depends on drainage, rooftop equipment, foot traffic, insulation targets, and how long you plan to hold the building. We survey the existing roof, core it where needed, and present the options with real costs and expected service life.

Minimal disruption to your operations

We sequence commercial work so your business keeps running — staged tear-offs, protected entrances, controlled debris, and daily site cleanup. Where required, we work nights and weekends.

Frequently asked questions

Are you in need of commercial roofing?

We can help. Send us the building details and we'll schedule a rooftop survey.