The cost of SBS modified bitumen roofing can significantly impact performance in modified asphalt applications. Higher-quality SBS materials often provide enhanced flexibility, durability, and resistance to UV degradation, leading to longer service life and reduced maintenance costs. While the initial investment may be higher, the long-term benefits, such as improved thermal performance and lower risk of leaks, can result in overall cost savings. Therefore, the upfront cost is often justified by the superior performance and longevity of the roofing system.