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MC 1204 — Pipe Insulation

New York City Administrative Code (current through L.L. 2026/147, enacted September 12, 2026, and amendments effective through October 10, 2026) · NYC Mechanical Code § MC 1204

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Section MC 1204: Pipe Insulation

1204.1 Insulation characteristics. Pipe insulation installed in buildings shall conform to the requirements of the New York City Energy Conservation Code, shall be tested in accordance with ASTM E 84 or UL 723, using the specimen preparation and mounting procedures of ASTM E 2231; and shall have a maximum flame spread index of 25 and a smoke-developed index not exceeding 450. Insulation installed in an air plenum shall comply with Section 602.2.1. Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2009/085. 1204.2 Required thickness. Hydronic piping shall be insulated to the thickness required by the New York City Energy Conservation Code. Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2009/085.