Which Roof System Is Right for Your Building?

There are seven major commercial flat roof systems, and each one is the best choice under the right conditions. The problem is that most building owners only hear about the system their contractor prefers to install.

This tool evaluates all seven systems — TPO, PVC, EPDM, modified bitumen, BUR, spray foam (SPF), and standing seam metal — against your specific building conditions and priorities. The result is a system-neutral recommendation based on performance data, not brand preference.

How it works

1. Building type — Different buildings have different exposures (grease, chemicals, foot traffic) that affect system performance.
2. Primary concern — Whether you prioritize cost, lifespan, wind resistance, energy efficiency, chemical resistance, or low maintenance changes the recommendation significantly.
3. Rooftop conditions — Heavy equipment, foot traffic, chemical exhaust, and ponding water each eliminate or favor specific systems.
4. Roof slope — Some systems require minimum slope; others are designed for dead-flat applications.
5. Budget priority — Lowest first cost and lowest lifecycle cost often point to completely different systems.

After you answer all five questions, you will see 1-2 recommended systems with specific reasons why they fit your situation, plus explanations for why other systems were eliminated.