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WUI is the Wildland – Urban – Interface this is the area where development and undeveloped wildland meet or intermingle. This interface is at the highest risk for wildfires because structures are in close proximity to natural fuels, creating a complex and dangerous environment for home and neighborhood wildfires.

Treat Perimeter:

Treat Landscaping:

Treat Trees:

Fences: Treat or replace wooden fences with non-combustible materials near the home.

Attic: Treating the raw wood in your attic and or crawl spaces

Roof: Use Class A fire-rated materials (metal, tile, asphalt shingles). This has been the code since 1997

Vents: Install ember-resistant vents.

CAL FIRE requirements, and the California Building Code (CBC) Chapter 7A, mandate that all exterior vents in Wildland-Urban Interface (WUI) areas must be ember- and flame-resistant to prevent wildfire ignition. This applies to attic, subfloor, foundation, and soffit vents, requiring non-combustible materials and mesh openings no larger than 1/8 inch, or the use of State Fire Marshal-approved vents that have passed specific ember and flame intrusion tests. 

Gutters: Keep clear of all debris; install metal guards on top.

Eaves & Soffits: Treat or box in with non-combustible materials.

Siding: Use ignition-resistant materials like fiber cement or stucco. Paint with our fire resistant primer and paint.

Windows: Install dual-pane tempered glass; or install a fire-rated window film and use metal screens.

Doors: Solid core or metal doors with tight-fitting frames.

Decks & Porches: Treat or use fire-resistant materials; keep clear underneath.