What is a TPO Roof?
TPO stands for thermoplastic polyolefin, a single-ply roofing membrane that covers the surface of a roof. While it has plastic in the name, it’s actually a blend of polypropylene and ethylene-propylene rubber, which has more flexible rubber-like qualities. It is a bonded three-layer system consisting of:
- Thermoplastic polyolefin base layer
- Polyester-reinforced fabric center (“scrim”)
- Thermoplastic polyolefin top layer
This bonded layer system is what gives TPO its superior strength and flexibility.
Why Choose a TPO Roof?
There are several reasons why homeowners and businesses choose a TPO roof for their flat roof.
- Cost. TPO roof materials are comparatively lower than other options.
- Heat Reflection. Because TPO is white, it reflects more heat and UV rays as compared to other options. This leads to less demand on the cooling system in the summer time.
- Installation flexibility. It can be installed with adhesive, fasteners, and heat welding. These options provide for a solid installation that will last decades.
- Durability. TPO roofs will not corrode or break down. The hot-welded seams are also stronger than seams in other roofing systems.
- Environmentally Friendly. TPO does not contain chlorine that some other roofing materials have.
Ever since its introduction, TPO roofing systems are becoming a more popular choice.