Resources & Guides / Building Codes & Standards / CBC Chapter 7A
CBC Chapter 7A: Wildfire Resistance
Materials and construction methods for buildings in Wildland-Urban Interface zones
Overview
California Building Code Chapter 7A establishes minimum standards for materials and construction methods for new buildings in Wildland-Urban Interface (WUI) Fire Areas. These requirements help structures resist ignition from wildfire exposures.
The code addresses exterior components most vulnerable to wildfire including roofing, siding, windows, decks, soffits, and vents. Compliance is mandatory in designated high fire hazard severity zones.
Component Guides
Key Requirements
• Ignition-resistant or noncombustible materials for exterior components
• Ember-resistant vents with 1/16" to 1/8" mesh screening
• Class A fire-rated roofing assemblies
• Tempered glass windows and doors
• 6-foot clearance zones around structures