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What is NYC BC § 2603.7.1?

Quick Answer

This section mandates that foam plastic insulation be separated from the plenum by a thermal barrier that meets specific flame spread and smoke-developed index criteria. The testing must comply with ASTM E 84 or UL 723 standards. Applies to building owners utilizing foam plastic insulation in construction.

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

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2603.7.1 Separation required.

BC § 2603.7.1

The foam plastic insulation shall be separated from the plenum by a thermal barrier complying with Section 2603.4 and shall exhibit a flame spread index of 75 or less and a smoke-developed index of 450 or less when tested in accordance with ASTM E 84 or UL 723 at the thickness and density intended for use.

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