Single-Ply Membrane Roofing: TPO vs. EPDM

Single-Ply Membrane Roofing: TPO vs. EPDM [Infographic]

One of the most common questions we’ve received from customers is, “What’s the difference between TPO and EPDM Single-Ply Membrane Roofing?”

Since West Roofing Systems has been around since 1979, we’ve have single-ply roofing fully ingrained in our system.

In this article, we’ll explain the the two most common single-ply roofing systems out there, TPO and EPDM, give you a brief description of each and then pin them up against each other.

Let’s begin:

Single-Ply Membranes are sheets of rubber and other synthetics that can be chemically adhered to insulation or ballasted creating a layer of protection on your commercial facility.

When you are considering single-ply membrane roofing, there are two types of membrane to choose from: TPO and EPDM.

While both TPO and EPDM are membranes that are installed on top of the insulation, but there are slight differences that could affect your facility.


Thermoplastic Polyolefin is a single-ply roofing membrane that is one of the fastest growing commercial roofing systems on the market.

TPO roofing systems are made up of a single layer of synthetics and reinforcing scrim that can be used to cover flat roofs.

For an average 20,000 sq. foot commercial roof, it will usually cost between $1.90 and $3.50 per square foot in materials and labor for a TPO membrane.


Ethylene Propylene Diene Monomer is a single-ply membrane that consists of a synthetic rubber compound that allows it to be flexible.

EPDM has been used on commercial roofing facilities since the 1960s and is considered a time-tested option.

For an average 20,000 sq. foot commercial roof, it will usually cost between $1.80 and $3.50 per square foot in materials and labor for an EPDM membrane.

Here’s an infographic to compare TPO and EPDM Single-Ply Membrane Systems:


Single-Ply Membrane Roofing Systems have been the go-to roofing for commercial, industrial, and manufacturing facilities for decades. Contact West Roofing Systems today to talk to our expert staff about your future Single-Ply Membrane Roofing System.

Next steps with Single-Ply Roofing?

Download our eBook below which features information about single-ply membrane, such as:

  • How much does a single-ply roof cost?
  • How is a single-ply roof installed?
  • What common problems do single-ply roofs face?

The essential guide to single-ply membrane roofing

Author: Aubrey Barto

Aubrey Barto is the Marketing Manager of West Roofing Systems, Inc. She has two BAs in News and Media Production with Certifications from Hubspot, HootSuite, University of San Francisco and Wharton School of Business. Aubrey works closely with West Roofing’s sales and service teams, she is up on our roofs taking photos and videos for our website regularly.

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