TPO, or Thermoplastic Polyolefin, roofing is polypropylene and ethylene-propylene rubber polymerized together to create a single-ply reflective roofing membrane. It was first used in 1989 and now is one of the most popular roofing product. The reason for this is because it is comparatively cheap and it’s typically white, a popular neutral color. This is not the reason TPO roofing is most commonly used, however.

There are multiple ways TPO roofing is environmentally friendly and can also help cut energy cost for building owners. The membranes TPO processes reflect UV radiation on the roofs’ surface, keeping the interior much cooler in the hot summer months of the year. The membranes can decrease the amount of carbon emissions in the air and contain no toxic or hazardous materials. When they need to be replaced, they are fully recyclable.

Installing the TPO membrane is done by screwing or gluing it, and the seams are glued or heat-welded. However, heat-welding should be done by a professional, as it requires the use of a hot-air gun to reach temperatures up to 930 degrees Celcius. This can create a stronger fused seam. A fiber-based reinforcement is an option to add make the TPO membrane more durable, which will last longer. While this can lead to extra costs, it can also lead to a stronger roof.