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Class A roof coverings shall be of material approved by the building commissioner after satisfactory evidence that it is effective against severe fire exposures. Under such exposures, Class A roof coverings shall not be readily flammable; shall not carry or communicate fires; shall afford a fairly high degree of heat insulation to the roof deck; shall not slip from position; shall possess nonflying brand hazard; and shall not require frequent repairs in order to maintain their fire-resistive properties.
(Prior code § 65-7.1; Amend Coun. J. 3-5-03, p. 104990, § 43; Amend Coun. J. 11-13-07, p. 14999, Art. II, § 1)