TPO And PVC Roofing Membrane Insulation
For most roofing projects, chemical resistance of the membrane is not a consideration. However, in some cases the roof may be exposed to chemicals, oils, greases, and the like. In these situations, the right membrane must be chosen. If chemical resistance is required, it must be balanced against other key factors that must be satisfied in order to meet all the requirements of the specific project.
Other key factors may include UV and heat resistance, ease of installation, thermal seamability, warranty requirements etc. TPO is considered the all-around membrane, TPO roofing membranes have a very good balance of properties. Extended-length warranties of as long as 35 years can be obtained.
PVC is known as the flexible membrane PVC roofing membrane is more flexible than TPO and is sometimes preferred due to its ease of handling. It is more acid resistant than TPO and the PVC-KEE version is the better choice for roofs that may be exposed to grease and oils. When choosing the type of roofing, especially going over old roofs, consider a PVC or TPO roof. These roofing materials come in rolls and a heat-weldable blend of polypropylene and ethylene propylene rubber components. They are polyester reinforced and flexible in colder temperatures. Adding flute fill and cover boards to increase insulation properties, A properly maintained TPO roof may last over 30 years!