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Section A5.407 [OSHPD 1, 2 & 4] Water Resistance and Moisture Management
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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.
Employ moisture control measures by the following methods.
Design and maintain landscape irrigation systems to prevent spray on structures.
Design exterior entries and/or openings subject to foot traffic or wind-driven rain to prevent water intrusion into buildings.
- Use features such as overhangs and recesses and flashings integrated with a drainage plane.
- Use nonabsorbent floor and wall finishes within at least two feet around and perpendicular to such openings.