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What is NYC BC § 1407.9?

Quick Answer

This section establishes the required surface-burning characteristics for materials used in construction, specifying that the flame spread index must not exceed 25 and the smoke-developed index must not exceed 450, as tested according to ASTM E 84 or UL 723. Applies to building owners using specified materials in construction.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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1407.9 Surface-burning characteristics.

BC § 1407.9

MCM shall have a flame spread index of not more than 25 and a smoke-developed index of not more than 450 when tested as an assembly in the maximum thickness intended for use in accordance with ASTM E 84 or UL 723.

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