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Chapter 6 — FIRE PROTECTION REQUIREMENTS

Section 605 — SPARK ARRESTORS

2025 California Wildland-Urban Interface Code (Title 24, Part 7.5) · 2025 edition · updated 2026-07-27 · California

605.1 General.

Chimneys serving fireplaces, barbecues, incinerators or decorative heating appliances in which solid or liquid fuel is used shall be provided with a spark arrestor. Spark arrestors shall be constructed of woven or welded wire screening of 12 USA standard gage wire (0.1046 inch) (2.66 mm) having openings not exceeding [1] / 2 inch (12.7 mm).

605.2 Net free area.

The net free area of the spark arrestor shall be not less than four times the net free area of the outlet of the chimney.

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▸ Contents — 2025 California Wildland-Urban Interface Code (Title 24, Part 7.5)
2025 California Wildland-Urban Interface Code (Title 24, Part 7.5)
  1. Chapter 1 — ADMINISTRATION
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — WILDLAND-URBAN INTERFACE AREAS
  4. Chapter 4 — WILDLAND-URBAN INTERFACE AREA REQUIREMENTS
  5. Chapter 5 — SPECIAL BUILDING CONSTRUCTION REGULATIONS
  6. ▸ Chapter 6 — FIRE PROTECTION REQUIREMENTS
    Overview
    1. Section 601 — GENERAL
    2. Section 602 — FIRE PROTECTION PLANS
    3. Section 603 — VEGETATION PLAN
    4. Section 604 — MAINTENANCE OF DEFENSIBLE SPACE
    5. Section 605 — SPARK ARRESTORS
    6. Section 606 — LIQUEFIED PETROLEUM GAS INSTALLATIONS
    7. Section 607 — STORAGE OF FIREWOOD AND COMBUSTIBLE MATERIALS
    8. Section 608 — BUILDING SITING AND SETBACKS
    9. Section 609 — RIDGELINES, FUEL BREAKS AND GREENBELTS
    10. Section 610 — FIRE SAFE DEVELOPMENT REGULATIONS
    11. Section 611 — SUBDIVISION REVIEW SURVEY
    12. Section 612 — GENERAL PLAN SAFETY ELEMENT
  7. Chapter 7 — REFERENCED STANDARDS
  8. Appendix A — GENERAL REQUIREMENTS
  9. Appendix B — VEGETATION MANAGEMENT PLAN
  10. Appendix C — COMMUNITY WILDLAND-URBAN INTERFACE (WUI) FIRE HAZ…
  11. Appendix D — MODEL ORDINANCE FOR FIRE HAZARD SEVERITY ZONE ADO…
  12. Appendix E — RESERVED
  13. Appendix F — CHARACTERISTICS OF FIRE-SMART VEGETATION
  14. Appendix G — VOLUNTARY HOME-HARDENING RECOMMENDATIONS
  15. Appendix H — REFERENCED CALIFORNIA DOCUMENTS
  16. Appendix I — BOARD OF APPEALS

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