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What is TPO Roofing?

TPO stands for Thermoplastic Polyolefin is a single ply membrane roofing used mainly for flat commercial roofs. It is one of the fastest-growing and most popular commercial roofing systems on the market TPO roofing membrane is made up of 2 layers of synthetic with reinforcing scrim.


TPO is a heat-weldable membrane that does not require the use of any volatile organic compounds (VOCs) during installation. As a result, TPO offers many benefits, including high reflectivity, UV resistance, and energy efficiency. It is also one of the most cost-effective commercial roofing solutions available today.

There are three main types of TPO roofing systems:

  1. Ballasted – This system uses large rocks or gravel to hold down the membrane. This is a good option for flat roofs that cannot support the weight of a more traditional roofing system.
  2. Mechanically Fastened – The membrane is attached using fasteners and plates to the flat roof deck. This is a good option for flat roofs that cannot be welded.
  3. Fully Adhered – In this system, the membrane is glued or welded to the flat roof deck. This is the most vital TPO roofing system used on new construction projects.