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Earlier editions: 20222019

Appendix A6

A6.407 [OSHPD 1, 2 & 4]—WATER Resistance and Moisture Management — 2025 California Green Building Standards Code

California Green Building Standards Code (Title 24, Part 11) · 2025 edition · updated 2026-10-19 · California

CBSC: official editions, supplements and errata

Cite as: 2025 California Green Building Standards Code (Title 24, Part 11) § A6.407 · Effective January 1, 2026 · Official source: Building Standards Commission

A6.407.3 Weather protection. Provide a weather-resistant exterior wall and foundation envelope as required by California Building Code Section 1403.2 and California Energy Code Section 150, manufacturer’s installation instructions or local ordinance, whichever is more stringent.

A6.407.4 Moisture control. Employ moisture control measures by the following methods.

A6.407.4.1 Sprinklers. Design and maintain landscape irrigation systems to prevent spray on structures.

A6.407.4.2 Entries and openings. Design exterior entries and/or openings subject to foot traffic or wind-driven rain to prevent water intrusion into buildings.

Notes:

  1. Use features such as overhangs and recesses and flashings integrated with a drainage plane.

  2. Use nonabsorbent floor and wall finishes within at least two feet around and perpendicular to such openings.

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▸Contents — California Green Building Standards Code (Title 24, Part 11)
California Green Building Standards Code (Title 24, Part 11)

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