
DC333 Passed Extended 30 minute ASTM E 84, meets all requirements to use instead of Fire Retardant-Treated (FRT) Wood. Code requires to pass ASTM E84 for 30 minutes there are no other test criteria accepted. May be used outside with Top Coat available in many colors.
Criteria Fire-retardant-treated wood is any wood product pressure-impregnated with chemicals or other means during manufacture having a flame spread classification of 25 or less and showing no evidence of significant progressive combustion when the test is continued for an additional period of 20 minutes total of 30 minutes. In addition, the flame front shall not progress more than 10.5 feet beyond the center line of the burners at any time when tested in accordance with ASTM E 84.{Ref.: IBC Section 2303.2}.
ANSI/UL 723 (ASTM E 84) TEST FOR SURFACE BURNING CHARACTERISTICS OF BUILDING MATERIALS AND FLAMMABILITY RATINGS Fire Protection Codes and Classification Interior Finish rating Class I (Class A), of the principal USA building codes: Life Safety Code, NFPA 101 Section 10.2.3 Interior Wall or Ceiling Finish Testing and Classification.





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