Chapter 2 — ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE

Section 110.7 — MANDATORY REQUIREMENTS TO LIMIT AIR LEAKAGE

2025 California Energy Code (Title 24, Part 6) · 2025 edition · ingested 2026-07-07 · California

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All joints, penetrations and other openings in the building envelope that are potential sources of air leakage shall be caulked, gasketed, weather-stripped or otherwise sealed to limit infiltration and exfiltration. Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1, Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.8, and 25943, Public Resources Code.