TPO (Thermoplastic Polyolefin) is a single-ply flat roofing material created from a combination of plastic and rubber. The result is an ideal flat roof roofing system that is reliable, cost-effective, energy efficient, and easy to install. Benefits of a TPO Roofing System is that they are considered reliable, cost-effective, energy efficient, UV resistant, lowers heating and cooling bills, extremely strong seams, fire resistant, resistant to chemicals, acid, salt, oil, strong puncture resistant material, most environmentally friendly single ply system, great flexibility even at extremely low temperatures, and provides an Energy Star Rating. TPO can be fully adhered or mechanically fastened. The seams of the membrane are hot air-welded together to form a very strong waterproof bond between sheets.