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

https://leakfixroofrepair232.novacrestiq.com/posts/commercial-metal-roofing-repair-when-damage-is-isolated

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.