Which factors affect modified bitumen roof cost per square foot in asphalt or bitumen modification systems?

The cost of modified bitumen roofing per square foot is influenced by several factors, including the type of modification (APP or SBS), the quality of materials used, labor costs, and the complexity of the installation. Additionally, geographical location, roof accessibility, and any necessary structural reinforcements can impact pricing. The choice of insulation and underlayment materials, as well as warranty options, also play a significant role in determining the overall cost.