Who is responsible for the method of attachment for roofing materials?

The roofing contractor is responsible for the method of attachment for roofing materials because they possess the technical knowledge and expertise necessary to determine the best practices for installing various types of roofing systems. This includes understanding the specific materials being used, local building codes, and the environmental conditions that may affect the roof's performance.

The contractor must ensure that the roofing is securely attached to the building structure, which is critical for the longevity and durability of the roof. Additionally, they are often required to follow the manufacturer's installation guidelines, which detail how the materials should be attached to provide proper insulation, waterproofing, and safety under adverse weather conditions. This responsibility includes making decisions on the type of fasteners, adhesives, and techniques used, which are crucial for the overall integrity of the roofing system.