What is TPO?

TPO is a type of single ply roofing membrane. TPO is an acronym that stands for Thermoplastic Polyolefin. It is an abbreviated way of stating the primary chemical composition of the roof membrane.

TPO Characteristics:

  • TPO Roofing is a single-ply thermoplastic membrane. It is installed in a single membrane application without multiple layers.
  • The membrane can be installed using several different methods including mechanically attached, adhered, ballasted and plate bonded.
  • TPO membranes come in a variety colors, but primarily are available in white, grey and tan.
  • TPO seams and flashings are completed using hot-air welding equipment.
  • TPO membranes are grease resistant.
  • TPO roofing membranes receive high wind ratings when installed according to pre-tested assemblies as per manufacturer specifications.
  • As of 2020, TPO is still a relatively new product in the market, so its longevity is largely untested. Moreover, manufacturers are still working out bugs in the technology.

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