Chapter 3 — NONRESIDENTIAL, HOTEL/MOTEL OCCUPANCIES,
Section 120.7 — MANDATORY REQUIREMENTS FOR BUILDING ENVELOPES
2025 California Energy Code (Title 24, Part 6) · 2025 edition · ingested 2026-07-07 · California
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Nonresidential and hotel/motel buildings shall comply with the applicable requirements in Sections 120.7(a) through 120.7(e). (a) Roof/Ceiling insulation. The opaque portions of the roof/ceiling that separates conditioned spaces from unconditioned spaces or ambient air shall meet the applicable requirements of Items 1 through 3 below: 1. Metal building. The weighted average U -factor of the roof assembly shall not exceed 0.098. 2. Wood framed and others. The weighted average U -factor of the roof assembly shall not exceed 0.075. 3. Insulation placement. Insulation installed to limit heat loss…