Each has its own advantages and disadvantages. Although many have their own opinions on which system is better than others, it really depends on the climate and area of the roof’s location, the roof itself, and how it is used. Another thing to look at is the installation of the roofing material.
TPO is short for Thermo Plastic Olefin. The installation process can be done or mixed with glue, mechanically fixed or moved, and the joints are either glued or hot air welded. TPO looks like PVC film because both are white and offer energy savings. There can be several thicknesses of TPO.
EPDM is short for Ethylene Propylene Diene Monomer. EPDM is more of a rubber material that is mostly black, although white-on-black EPDM roofing was introduced due to the increase in popularity of cool roofs. The EPDM roof is installed with glue, but it can also be fixed mechanically and with ballast. Sometimes flat roofs with parapet walls are covered with stone over EPDM.
PVC is short for polyvinyl chloride. The PVC flat roof system has become more popular in many areas because the white film reflects UV rays so much. This system is mechanically fixed and sometimes moved to join and the seams are welded with hot air. Depending on the manufacturer, this membrane can be installed for flat roofs and their accessories, and most seams are welded in the factory to reduce seams that require hot welding. It is also available in multiple thicknesses from 40-80 mil.
We offer the GAF liquid-applied roofing system solutions which create a seamless barrier to weather elements. It can be installed over most existing roof types, reducing the need for tear-offs for structurally sound roofs, or the installation of cover boards. No hot kettles, no expensive installation equipment, and no special seaming devices are required.