Commercial Roof Covering: TPO vs. Customized Bitumen
https://www.edocr.com/v/jyopmvzv/tiableizcv/APPLICATION-Waterproofing-Membrane-Layer
The percentage of EPDM included in the roofing at the compounding stage gives the ozone, UV as well as various other environmental properties. There is no industrial criterion for the percent of EPDM to readily