Thermoplastic polyolefin, or TPO, is a synthetic material composed of a single-ply membrane with fabric reinforcing scrim that stabilizes and strengthens the membrane. It is one of the best roofing materials available today because it has improved and increased performance. TPO is famous for its ability to reflect ultraviolet waves (UV) while conserving energy and saving on utility costs. If you are looking for a roofing membrane that will stand the test of time, TPO roofing might be perfect for you.