What technical requirements define modified bitumen vs rubber roof for asphalt or bitumen modification?

Modified bitumen and rubber roofs differ primarily in their composition and performance characteristics. Modified bitumen is typically enhanced with polymers like APP or SBS, improving flexibility and UV resistance. In contrast, rubber roofs, often made from EPDM or TPO, provide superior elasticity and durability. Technical requirements include tensile strength, elongation, thermal stability, and resistance to environmental factors. Each material’s specifications dictate its suitability for various applications in roofing systems.