N.Y. Multiple Dwelling Law Section 186
Extension roofs

The under-surface of the roof of any extension shall be fire-retarded or sprinklered unless such ceiling has already been plastered in a manner satisfactory to the department.

Source: Section 186 — Extension roofs, https://www.­nysenate.­gov/legislation/laws/MDW/186 (updated Sep. 22, 2014; accessed Feb. 28, 2026).

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Verified:
Feb. 28, 2026

Last modified:
Sep. 22, 2014

§ 186. Extension roofs's source at nysenate​.gov

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