This particular facility chose an energy efficient Single Ply TPO Roof System. TPO (Thermoplastic Olefin) is a very popular roofing membrane these days. It is durable, like EPDM rubber, and weather resistant because of the hot-air welded seams.
TPO hold up great against ozone and algae. It is safe to install, and environment-friendly. It can almost be said to be “monolithic” – that is, your roof will perform as a single, seamless covering.