What technical requirements define modified bitumen roof cost for asphalt or bitumen modification?

The cost of modified bitumen roofing is influenced by several technical requirements, including the type of polymer used for modification (such as APP or SBS), the thickness of the membrane, and the application method (torch-applied, self-adhered, or cold adhesive). Additionally, factors like the roofing substrate, insulation compatibility, and local building codes can affect pricing. Quality control measures during manufacturing and installation also play a crucial role in determining overall costs.