Polyvinyl Chloride is also a single-ply white membrane used in commercial and residential roofing. While it’s not as durable as EPDM, you can still expect a TPO membrane to last 25 years – as long as it’s installed properly! PVC If you have a flat roof or low-slope dormer over a bedroom, TPO is a great option because it will keep the room cooler, however if you have any windows overlooking the membrane, the white TPO will get much dirtier, much faster than black EPDM. Unlike EPDM, TPO’s white membrane reflects heat instead of absorbing it. Thermoplastic Polyolefin is a single-ply white membrane used in both commercial and residential roofing. EPDM is extremely durable and is basically like having a bulletproof rubber roof system that lasts 25-30 years. It’s a black membrane, so it isn’t recommended for residential use over a bedroom or living space because it will absorb heat, however it could be installed over a garage or non-living space. Ethylene Propylene Diene Terpolymer is a synthetic, black rubber membrane, most commonly used on commercial facilities.