CHAPTER 15 ROOF ASSEMBLIES AND ROOFTOP STRUCTURES

CHAPTER 15. ROOF ASSEMBLIES AND ROOFTOP STRUCTURES . SECTION 1501 of the roof deck, and additional slope has been provided to GENERAL ensure drainage of the roof within 48 hours of precipitation. Scope. The provisions of this CHAPTER shall govern the REROOFING. The process of recovering or replacing an design, materials, construction and quality of roof ASSEMBLIES , existing roof covering. See Roof recover and Roof replace- and ROOFTOP STRUCTURES . ment.. Exception: Buildings and STRUCTURES located within the ROOF ASSEMBLY. A system designed to provide weather high-velocity hurricane zone shall comply with the provi- protection and resistance to design loads. The system consists sions of Section and Sections 1512 through 1525. of a roof covering and roof deck or a single component serving as both the roof covering and the roof deck. A roof assembly includes the roof deck, vapor retarder, substrate or thermal bar- SECTION 1502 rier, insulation, vapor retarder and roof covering. DEFINITIONS.

pound (182 kg) of roofing gravel or 300 pounds (145 kg) of slag per square shall be applied. A minimum of 50 percent of the total aggregate shall be embedded in the flood coat of bitu-men or installed in accordance with its product approval. Aggregate shall be dry and free from dirt and shall be in com-

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