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NYC Building Code

§ 1405.4 — § 1405.4

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What is NYC BC § 1405.4?

Quick Answer

This section outlines the requirements for the installation of flashing to prevent moisture intrusion in building walls. It specifies locations where flashing must be installed, including around doors, windows, and various exterior projections. Applies to building owners involved in construction or renovation projects.

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

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1405.4 Flashing.

BC § 1405.4

Flashing shall be installed in such a manner so as to prevent moisture from entering the wall or to redirect moisture to the exterior. Flashing shall be installed where required at the perimeters of exterior door and window assemblies, penetrations and terminations of exterior wall assemblies, exterior wall intersections with roofs, chimneys, porches, decks, balconies and similar projections and at built-in gutters and similar locations where moisture could enter the wall. Flashing with projecting flanges shall be installed on both sides and the ends of copings, under sills and continuously above projecting trim.

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