Selecting a Flat Roofing Option

February 9th, 2022

Finding the Right Flat Roofing Option for Your Building

Commercial Low-Slope Roofing Solutions From Warren Roofing®

Many commercial buildings—from schools to hospitals and retail centers—feature a flat roof. While this style of roof may not have much architectural appeal, the functionality of a flat roof is its most valuable feature. Low-slope roofs are durable, water resistant, easily accessible for repairs to HVAC and ventilation systems, and generally easier for a property manager to maintain. But make no mistake: There is no “one-size-fits-all” flat roofing system. If you are considering a flat roof replacement for your commercial building, you’ll want to work with a commercial roofing contractor to make sure you understand your options, including built-up and single ply roofing systems.

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Understanding the Types of Flat Roofing Systems

Warren Roofing® Is Your Local Commercial Roofing Expert

As you assess your options for a commercial roof replacement, it is important to be familiar with the three primary types of flat roofing options available:

Built-up Roof Systems

Modified Bitumen

  • Made from a combination of tar asphalt (also called bitumen) and either rubber or plastic
  • Incredible durability and leak resistance
  • Longevity
  • Ideal for buildings with flat roofs or sections of low-sloped roofing
  • Commonly used on apartment complexes and row houses

Built-Up Roofing

  • Made from alternating layers of fabric and asphalt
  • Seamless, multilayered system provides waterproofing
  • Cost-effective with simple installation
  • Ideal for buildings with flat or low-slope roofs

Single Ply Roof Systems

EPDM (Rubber)

  • Made of synthetic rubber
  • Features an application of a commercial-grade waterproof elastic membrane
  • Resistant to UV rays and ozone
  • Ideal for flat or low-pitched roofing systems
  • Commonly used on school roofs


  • Made of thermoplastic or polyvinyl chloride
  • Features an application of a commercial-grade waterproof membrane
  • Resistant to oils and grease
  • Ideal for flat or low-pitched roofing systems
  • Commonly used on school roofs

When you tell us more about your specific project—including your building’s location, exposure to the elements, and general function—our team can help you narrow down your options for flat roofing systems. The first step will be scheduling an inspection of your building’s current roof.

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Choose Warren Roofing® for Your Flat Roofing Installation

Reach Out for an Estimate Today

Whether you select built-up roofing or single ply roofing, the Warren Roofing® crew will provide you with the best possible roofing system for your needs. Our roofing technicians are among the best in the business, and we lead the industry in quality, performance, and client satisfaction. Let us help you restore your commercial building’s flat roofing system.

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