The installation of built-up roofs shall comply with the provisions of this section.
Built-up roofs shall have a design slope of not less than one-fourth unit vertical in 12 units horizontal (2-percent slope) for drainage, except for coal-tar built-up roofs, which shall have a design slope of a minimum one-eighth unit vertical in 12 units horizontal (1-percent slope).
BUILT-UP ROOFING MATERIAL STANDARDS
|Acrylic coatings used in roofing||ASTM D6083|
|Aggregate surfacing||ASTM D1863|
|Asphalt adhesive used in roofing||ASTM D3747|
|Asphalt cements used in roofing||ASTM D2822; D3019; D4586|
|Asphalt-coated glass fiber base sheet||ASTM D4601|
|Asphalt coatings used in roofing||ASTM D1227; D2823; D2824; D4479|
|Asphalt glass felt||ASTM D2178|
|Asphalt primer used in roofing||ASTM D41|
|Asphalt-saturated and asphalt-coated organic felt base sheet||ASTM D2626|
|Asphalt-saturated organic felt (perforated)||ASTM D226|
|Asphalt used in roofing||ASTM D312|
|Coal-tar cements used in roofing||ASTM D4022; D5643|
|Coal-tar primer used in roofing, dampproofing and waterproofing||ASTM D43|
|Coal-tar saturated organic felt||ASTM D227|
|Coal-tar used in roofing||ASTM D450, Type I or II|
|Glass mat, coal tar||ASTM D4990|
|Glass mat, venting type||ASTM D4897|
|Mineral-surfaced inorganic cap sheet||ASTM D3909|
|Thermoplastic fabrics used in roofing||ASTM D5665; D5726|
Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions.