TPO which is short for Thermoplastic Polyolefin, it is the mixture of polypropylene and ethylene-propylene (rubber), these elements are combined using state-of-the-art polymer manufacturing technology. This creates the perfect residential roofing system that is very sturdy, affordable and energy efficient. It is also very easy to install and is environmentally friendly. Systems can be installed fully adhered to or mechanically fastened. TPO is the number one solution for new construction, reroofing projects and overlays.