A roof system in which the principal roof covering is a single layer of flexible membrane often thermoset or thermoplastic.
Types of Single Ply Roofing systems
What Is a TPO Roof? TPO stands for thermoplastic polyclinic, a single-ply roofing membrane that covers the surface of the roof. The name is a bit misleading, because rather than being a plastic, TPO is actually one of a few different types of rubber, usually a blend of polypropylene and ethylene-polypropylene rubber.
PVC membrane is . … PVC roofing membrane is designed for all types of commercial and residential single-ply roof construction and re-roofing applications or repairs to existing PVC systems. PVC membrane is suitable for both mechanical and fully-adhered roofing systems.