This sustainability standard establishes an approach to the evaluation of the sustainability of single ply roofing membranes. As used in this Standard, "Single Ply Roofing Membrane" includes, but is not limited to, EPDM (EthylenePropylene Diene Terpolymer), KEE (Ketone Ethylene Ester), PVC (Poly (Vinyl Chloride), TPO (Thermoplastic Polyolefin), and PIB (Polyisobutylene) products.