Chapter 8 — ROOF-CEILING CONSTRUCTION
R801 General — 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) § R801 · Effective January 1, 2026 · Official source: Building Standards Commission
R801.1 Application.¶
The provisions of this chapter shall control the design and construction of the roof-ceiling system for buildings.
R801.2 Requirements.¶
Roof and ceiling construction shall be capable of accommodating all loads imposed in accordance with Section R301 and of transmitting the resulting loads to the supporting structural elements.
R801.3 Roof drainage.¶
In areas where expansive soils or collapsible soils are known to exist, all dwellings and townhouses shall have a controlled method of water disposal from roofs that will collect and discharge roof drainage to the ground surface not less than 5 feet (1524 mm) from foundation walls or to an approved drainage system.
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