R604 Wood Structural Panels — 2025 California Residential Code
California Residential Code (Title 24, Part 2.5) · 2025 edition · updated 2026-09-26 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Residential Code (Title 24, Part 2.5) § R604 · Effective January 1, 2026 · Official source: Building Standards Commission
R604.1 Identification and grade.¶
Wood structural panels shall conform to DOC PS 1, DOC PS 2, ANSI/APA PRP 210, CSA O325 or CSA O437. Panels shall be identified by a grade mark or certificate of inspection issued by an approved agency.
R604.2 Allowable spans.¶
The maximum allowable spans for wood structural panel wall sheathing shall not exceed the values set forth in Table R602.3(3).
R604.3 Installation.¶
Wood structural panel wall sheathing shall be attached to framing in accordance with Table R602.3(1) or R602.3(3).
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