Common roofing requirements involve dimensions, mechanics and performance, as well as specifics related to fabrication, installation and possible hazards. Although specific roofing requirements vary across states, standards related to safety, installation and materials are common throughout the country.
Roofing standards require that bituminous sheet materials and emulsions be tested to ensure that roofing felts and fabrics meet environmental standards. Solutions for roofing and waterproofing should not contain hazardous materials such as asbestos or coal tar adhesive. Cap sheets, shingles and asphaltic materials should be tested for staining and weathering.
Other roofing requirements involve safety measures such as specific fastening of roofs as well as masonry and design standards. The weight of a roof should also be in line with the capacity of the building and should match residential or commercial norms.