PVC stands for polyvinyl chloride, meaning it is comprised of carbon, hydrogen, and chlorine (from salt) on a molecular level. When heated sufficiently, thermoplastics temporarily shift from a solid to a semi-solid state enabling the sheets or panels that are overlapped to fuse together as a solid upon cooling. This process yields one, continuous membrane rather than several compressed particles. This process, referred to as heat-welded seam technology, is one of the most beneficial features of PVC. First appearing on roofs in Europe in the 1960s, PVC has the longest track record in roofing membranes of all thermoplastics. Since it has been widely tested and perfected, there are many options with this type of roofing membrane.
Manufacturers have the ability to produce a large array of colors, including white, which is heat reflective. PVC can be attached and adhered in several different ways. These options make PVC roofs completely customizable and aesthetically pleasing.
With the low-temperature flexibility and high-temperature tolerance points of the membrane, PVC is very flame resistant, impact resistant and resilient. Because of the resilience and performance of PVC, many roofs throughout the United States that were installed 20 years ago are still performing well to-date