Several factors influence the appearance of granular modified bitumen roofing images in asphalt or bitumen modification systems. These include the type and quality of the modifier used, the granule size and color, the application method, and the substrate preparation. Additionally, environmental conditions during installation, such as temperature and humidity, can impact the adhesion and overall finish. Proper curing and aging processes also play a crucial role in the final appearance and performance of the roofing system.