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

https://metalinstallationcontractor204.zenbloomer.com/posts/roof-inspection-the-first-step-after-storm-damage

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.