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NYC Building Code

§ 720.2 — § 720.2

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What is NYC BC § 720.2?

Quick Answer

This section outlines the requirements for concealed insulating materials in buildings, mandating compliance with specific sections and the use of a thermal barrier. An exception is provided for certain types of insulation that meet specified smoke-development index criteria. Applies to building owners involved in insulation installation.

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

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720.2 Concealed installation.

BC § 720.2

Insulating materials, where concealed as installed in buildings of any type construction, shall comply with Sections 720.1, 720.1.1 and 720.1.2. Concealed insulation shall be separated from the building interior by a thermal barrier consisting of at least 1/2-inch (12.7 mm) thick gypsum wallboard or approved equivalent. Exception: Cellulosic fiber loose-fill insulation complying with the requirements of Section 720.6 shall only be required to meet a smoke-development index of not more than 450, when tested in accordance with CAN/ULC S102.2, provided such insulation has a smoke-development index that complies with the requirements of Section 720.2 or 720.3, as applicable, and Section 720.6 of this code. (Am. L.L. 2023/077, 6/11/2023, eff. 6/11/2023) Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2023/077.

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