Quality Trusted Commercial Construction & Roofing has been installing commercial flat roofs for over 14 years. Even after all of these years, the most common question from our customers is, “What is the difference between TPO and EPDM roofing membranes?”

TPO and EPDM are two common options when you are choosing a roof membrane for your building. Both are single-ply membranes that can be installed on your building with many installation options throughout the year. Both membranes are high-quality material and cost effective, however, there are slight differences you should know about before making your decision.

TPO Membrane

TPO is a high-quality thermoplastic polyolefin single-ply roof membrane. It has proven flexibility, weather resistance and the performance of hot-air welded seams. TPO has many installation options, such as fully adhered, mechanically attached, ballasted and induction welded.

EPDM Membrane

EPDM (ethylene propylene diene monomer) is a widely used roofing material that is known for its durability and ease of installation. This roofing membrane uses extremely durable and high-performance compounds that stand up to the harshest winters and hottest summers. Like TPO, EPDM has many installation options such as fully adhered, mechanically attached and ballasted.

Here is a quick reference guide in the differences of TPO and EPDM:


  • Has been used for 20+ years
  • Many installation options
  • Available in white or gray
  • Seams can be hot-air welded
  • Typically lasts 20-25 years


  • Has been used for 60+ years
  • Many installation options
  • Available in black and white
  • Typically lasts 20-25 years

Contact Qt

The experts at Qt have the knowledge and expertise to work on your next TPO or EPDM roofing project. Contact Qt Commercial to learn more today!