Everything You Need to Know About Commercial Roofing

When it comes to commercial roofing, making the right decision can save building and property owners thousands of dollars and countless headaches. Here's a comprehensive guide to help you navigate the options.

Types of Commercial Roofing Systems

The most common commercial roofing systems include TPO (thermoplastic polyolefin), EPDM (ethylene propylene diene monomer or rubber roofing), PVC, metal roofing, built-up roofing (BUR or gravel roofs), modified bitumen, spray polyurethane foam (SPF), and silicone roof coating systems. Each has different performance characteristics, costs, and ideal use cases.

Restoration vs. Replacement

One of the most important decisions in commercial roofing is whether to restore an existing roof or replace it entirely. Restoration systems — spray foam and silicone coatings — go over the existing roof, avoiding tear-off costs and typically costing 50–70% less than replacement. They're viable when the existing substrate is in acceptable condition and moisture levels in the insulation are below 25%.

Key Factors When Choosing a System

The right system depends on your existing roof type and condition, your building's climate and drainage, your budget, and your long-term goals. A building owner planning to hold the property for 20+ years has different needs than one planning to sell in 5 years.

The Importance of Choosing the Right Contractor

Commercial roofing is a significant investment. Work with a contractor who is manufacturer-approved, has verifiable experience with your specific roof type, and provides honest recommendations rather than automatically pushing the highest-dollar solution.