Glossary / spark arrester

spark arrester

Noncombustible corrosion-resistant metal mesh on a chimney or stovepipe outlet. CAL FIRE’s low-cost list names 3/8- to 1/2-inch openings. It is not an ember-resistant wall vent.

Last verified 2026-08-23. JSON (CC BY 4.0)

Also called: spark arrestor.

Do not use as a synonym: listed vent.

Related

• mesh
• ember
• roofing
• Home-hardening ladder

Where this term is used

2 guides use this term.

• Chimney spark arrestors
• Home-hardening ladder