Single ply roofing, as its name suggests is a roofing system consisting of one layer of material. There are many types of single ply products, most of them designated by the initials of their principal chemical compound. For example one popular membrane material is PVC, a flexible version of polyvinyl-chloride. Morgan Roofing Contractors installs two different single ply roof system including: TPO and PVC, content removed . When selecting a single-ply system, it is imperative that the choice is tailored to the specific project. Consult with your project manager for recommendations based on your project parameters.