Which factors affect peel and stick modified bitumen roofing in asphalt or bitumen modification systems?

Several factors influence the performance of peel and stick modified bitumen roofing systems. These include substrate preparation, surface cleanliness, and temperature during application. Proper adhesion is critical, requiring a dry, smooth surface free of contaminants. Ambient temperature affects the flexibility and tackiness of the membrane; optimal conditions are typically between 50°F and 90°F (10°C to 32°C). Additionally, the quality of the modified bitumen itself, including polymer content and formulation, plays a significant role in durability and performance.