PVC roofing is made from polyvinyl chloride. PVC is a great single-ply roofing solution. It’s made from a lower percentage of oil and petroleum than thermoplastic polyolefin (TPO) or ethylene propylene diene terpolymer (EPDM). As a cool roof membrane, it carries both Energy Star and Cool Roof ratings.
PVC is surprisingly strong. Governing bodies list the breaking strength of roofs made from this material as at least 350 pounds per square inch — far above the minimum breaking strength required by the American Society of Testing and Materials (ASTM), which is 200 pounds per square inch.
Because PVC is so strong and stable, it can be installed by heat welding the seams, as opposed to other membranes that require adhesive or utilize a taped seam. This installation method allows a PVC roof to expand and contract with a building. PVC can also be sealed with solvent welding and attached to metal flashing and other components with adhesives.
This robust material also offers protection against chemicals, water leaks, UV rays and fire. Thanks to its cool reflective properties, PVC is resistant to damage and discoloration from the sun’s radiation.