Aerial view of a commercial flat roof on the Gulf Coast

The building owner's guide to commercial flat roofing.

Independent. System-neutral. Built for the person who signs the check.

Commercial Roofing Systems

Every flat roof system has applications where it excels and conditions where it falls short. Understanding the differences is the first step to making a sound investment.

TPO Roofing

Most widely installed commercial system. $5.50-9.00/sf installed.

PVC Roofing

Superior chemical resistance. $7.00-12.00/sf installed.

EPDM Roofing

Proven rubber membrane. $5.00-8.00/sf installed.

Modified Bitumen

Multi-layer redundancy. $6.00-10.00/sf installed.

Compare Two Systems Side by Side

Select any two roofing systems to see how they compare on cost, lifespan, chemical resistance, wind performance, and best applications.

System A

System B

Having a Roof Problem?

Identify your issue and understand the severity, causes, and next steps before calling a contractor.

Ponding Water

Standing water that won't drain after 48 hours.

Leaks

Active water intrusion into the building.

Seam Issues

Separation, fish-mouthing, or adhesive failure.

Storm Damage

Wind uplift, debris impact, or blow-off.

Interactive Tools for Building Owners

Make informed decisions with tools designed for the person managing the building, not the person selling the roof.

System Selector

Answer five questions about your building and get a system recommendation with reasoning.

Cost Estimator

Get a planning-level cost range for your roof size, system type, and project conditions.

Inspection Checklist

A printable, interactive checklist organized by roof area for semi-annual inspections.

What Kind of Building?

Different buildings have different roofing requirements. The right system depends on what happens inside and on top of your building.

Flat Roof Report is a free public resource developed by Southern Roofing Systems to elevate public knowledge of commercial roofing and help building owners make confident decisions.