Several factors influence the choice between modified bitumen roofing and EPDM in asphalt or bitumen modification systems. These include climate adaptability, with modified bitumen offering better performance in extreme temperatures. Durability and resistance to UV degradation also play a role, as modified bitumen typically has enhanced longevity. Installation methods differ, with modified bitumen requiring heat or adhesive, while EPDM is often easier to install. Additionally, cost considerations and maintenance requirements can impact the decision.