Chapter 6 — FIRE PROTECTION REQUIREMENTS
Section 605 — SPARK ARRESTORS
2025 California Wildland-Urban Interface Code (Title 24, Part 7.5) · 2025 edition · ingested 2026-07-06 · California
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605.1 General. ¶
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. ¶
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.