For commercial roofing, a Roofing Contractor can evaluate low-slope systems and install TPO, EPDM, PVC, modified bitumen

https://www.slideserve.com/goldeturom/residential-roof-installation-choosing-asphalt-shingle-roofing

For commercial roofing, a Roofing Contractor can evaluate low-slope systems and install TPO, EPDM, PVC, modified bitumen, or built-up roofing.