Section R803 — ROOF SHEATHING — 2025 California Residential Code (Title 24, Part 2.5)

R803.1 Lumber sheathing. ¶

R803.1 Lumber sheathing. Allowable spans for lumber used as roof sheathing shall conform to Table R803.1. Spaced lumber sheathing for wood shingle and shake roofing shall conform to the requirements of Sections R905.7 and R905.8. Spaced lumber sheathing is not allowed in Seismic Design Category D 2 . TABLE R803.1—MINIMUM THICKNESS OF LUMBER ROOF SHEATHINGCol2 ------ RAFTER OR BEAM SPACING (inches) MINIMUM NET THICKNESS (inches) 245/8 48a11/2 T & G 60b60b 72c72c For SI: 1 inch = 25.4 mm.<bra. Minimum 270F b, 340,000E.<brb. Minimum 420F b, 660,000E.<brc. Minimum 600F b, 1,150,000E.For SI: 1…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission

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R803.2 Wood structural panel sheathing. ¶

R803.2 Wood structural panel sheathing. R803.2.1 Identification and grade. Wood structural panels shall conform to DOC PS 1, DOC PS 2, CSA O325 or CSA O437, and shall be identified for grade, bond classification and performance category by a grade mark or certificate of inspection issued by an approved agency. Wood structural panels shall comply with the grades specified in Table R503.2.1.1(1). 8-30 2025 CALIFORNIA RESIDENTIAL CODE on Jul 18, 2025 11:14 AM (CDT) THEREUNDER. ROOF-CEILING CONSTRUCTION R803.2.1.1 Exposure durability. Wood structural panels, when designed to be permanently…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use

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