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NYC Building Code

§ 1405.12.3 — § 1405.12.3

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What is NYC BC § 1405.12.3?

Quick Answer

This section outlines the requirements for the application of thin exterior structural glass veneer, specifying that it must be set only after the backing is dry and an approved bond coat is applied. The section details the necessary thickness of the mastic cement used for bonding the glass to the backing. Applies to building owners involved in exterior glass installations.

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

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1405.12.3 Application.

BC § 1405.12.3

Thin exterior structural glass veneer shall be set only after backing is thoroughly dry and after application of an approved bond coat uniformly over the entire surface of the backing so as to effectively seal the surface. Glass shall be set in place with an approved mastic cement in sufficient quantity so that at least 50 percent of the area of each glass unit is directly bonded to the backing by mastic not less than 1/4 inch (6.4 mm) thick and not more than 5/8 inch (15.9 mm) thick. The bond coat and mastic shall be evaluated for compatibility and shall bond firmly together.

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