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NYC Building Code

§ 720.1.1 — § 720.1.1

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What is NYC BC § 720.1.1?

Quick Answer

This section outlines the requirements for insulating materials used in noncombustible construction. Materials must either pass a specific noncombustibility test or meet defined flame spread and smoke development indices when tested according to ASTM standards. Applies to building owners involved in construction projects requiring noncombustible materials.

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

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720.1.1 Noncombustible construction.

BC § 720.1.1

Insulating materials used in noncombustible construction must either: Satisfactorily pass a test for determining noncombustibility of elementary materials, based on the test procedures of ASTM E 136; or Have a flame spread index not greater than 25, a smoke-development index not greater than 50, and be without evidence of continued progressive combustion when tested in accordance with ASTM E 84.

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