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NYC Mechanical Code

§ 801.18.4 — § 801.18.4

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What is NYC MC § 801.18.4?

Quick Answer

This section outlines the required airspace clearance for chimneys and vents in accordance with the New York City Building Code and manufacturer's instructions. It allows for exceptions for masonry chimneys that are lined or relined with specific chimney lining systems under certain conditions. Applies to building owners and property operators managing chimney installations.

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

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801.18.4 Clearances.

MC § 801.18.4

Chimneys and vents shall have airspace clearance to combustibles in accordance with the New York City Building Code and the chimney or vent manufacturer's instructions. Exception: Masonry chimneys without the required airspace clearances shall be permitted to be used if lined or relined with a chimney lining system listed for use in chimneys with reduced clearances in accordance with UL 1777 or ULC-S635. The chimney clearance shall be not less than permitted by the terms of the chimney liner listing and the manufacturer's instructions.

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