Which factors affect minimum slope for modified bitumen roofing in asphalt or bitumen modification systems?

The minimum slope for modified bitumen roofing is influenced by several factors, including drainage efficiency, the type of modified bitumen used, and local climate conditions. Proper drainage is crucial to prevent water pooling, which can lead to membrane failure. Additionally, the specific properties of the bitumen modification, such as elasticity and temperature resistance, can affect performance. Local building codes and manufacturer recommendations also play a vital role in determining the appropriate slope for effective water runoff.