For flat or low-slope commercial roofs, a Roofing Contractor may install or repair systems using TPO, EPDM, PVC

https://metalrooflongevitycontractor070.inkharbory.com/posts/epdm-commercial-roofing-installation-and-longevity-2

For flat or low-slope commercial roofs, a Roofing Contractor may install or repair systems using TPO, EPDM, PVC, modified bitumen, or built-up roofing.