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

https://membranetypestpopvcepdm572.scriblorax.com/posts/how-post-event-evaluation-determines-repair-vs-replacement-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.