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Chapter 2 — ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

Section 110.7 — MANDATORY REQUIREMENTS TO LIMIT AIR LEAKAGE

2025 California Energy Code (Title 24, Part 6) · 2025 edition · updated 2026-07-25 · California

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.

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▸ Contents — 2025 California Energy Code (Title 24, Part 6)
2025 California Energy Code (Title 24, Part 6)
  1. Chapter 1 — ALL OCCUPANCIES—GENERAL PROVISIONS
  2. ▸ Chapter 2 — ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MAN…
    Overview
    1. Section 110.0 — SYSTEMS AND EQUIPMENT—GENERAL
    2. Section 110.1 — MANDATORY REQUIREMENTS FOR APPLIANCES
    3. Section 110.2 — MANDATORY REQUIREMENTS FOR SPACE-CONDITIONING …
    4. Section 110.3 — MANDATORY REQUIREMENTS FOR SERVICE WATER-HEATI…
    5. Section 110.4 — MANDATORY REQUIREMENTS FOR POOL AND SPA SYSTEM…
    6. Section 110.5 — NATURAL GAS CENTRAL FURNACES,
    7. Section 110.6 — MANDATORY REQUIREMENTS FOR FENESTRATION PRODUC…
    8. Section 110.7 — MANDATORY REQUIREMENTS TO LIMIT AIR LEAKAGE
    9. Section 110.8 — MANDATORY REQUIREMENTS FOR INSULATION, ROOFING…
    10. Section 110.9 — MANDATORY REQUIREMENTS FOR LIGHTING CONTROLS
    11. Section 110.10 — MANDATORY REQUIREMENTS FOR SOLAR READINESS
    12. Section 110.11 — MANDATORY REQUIREMENTS FOR ELECTRICAL POWER D…
    13. Section 110.12 — MANDATORY REQUIREMENTS FOR DEMAND MANAGEMENT
  3. Chapter 3 — NONRESIDENTIAL, HOTEL/MOTEL OCCUPANCIES, AND COVER…
  4. Chapter 4 — NONRESIDENTIAL AND HOTEL/MOTEL OCCUPANCIES—MANDATO…
  5. Chapter 5 — NONRESIDENTIAL AND HOTEL/MOTEL OCCUPANCIES—PERFORM…
  6. Chapter 6 — NONRESIDENTIAL AND HOTEL/MOTEL OCCUPANCIES—
  7. Chapter 7 — SINGLE-FAMILY RESIDENTIAL BUILDINGS—
  8. Chapter 8 — SINGLE-FAMILY RESIDENTIAL BUILDINGS—PERFORMANCE AN…
  9. Chapter 9 — SINGLE-FAMILY RESIDENTIAL BUILDINGS—ADDITIONS AND …
  10. Chapter 10 — MULTIFAMILY BUILDINGS—MANDATORY REQUIREMENTS
  11. Chapter 11 — MULTIFAMILY BUILDINGS—PERFORMANCE AND PRESCRIPTIV…
  12. Chapter 12 — MULTIFAMILY BUILDINGS—ADDITIONS, ALTERATIONS AND …

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