What technical requirements define how long does modified bitumen roof last for asphalt or bitumen modification?

The longevity of a modified bitumen roof is influenced by several technical requirements, including the quality of the bitumen used, the type and percentage of modifiers (such as SBS or APP), the thickness of the membrane, and the installation method. Additionally, environmental factors like UV exposure, temperature fluctuations, and moisture levels play a crucial role. Proper maintenance and adherence to manufacturer specifications also significantly impact the roof’s lifespan, typically ranging from 15 to 30 years.