Code · 9 min read · Updated 2026-05-27

Chapter 7A Roofing: What LA Fire-Zone Homeowners Need to Know

In March 2025 CAL FIRE expanded the Very High Fire Hazard Severity Zone (VHFHSZ) maps across LA County. Thousands of homes that were previously "moderate" or "high" hazard are now classified VHFHSZ — and Chapter 7A of the California Building Code now applies. If you got a letter from LA County or the City of LA in the last year, or if you're rebuilding after the Palisades or Eaton fires, this guide is for you.

What Chapter 7A actually is

Chapter 7A is a section of the California Building Code titled "Materials and Construction Methods for Exterior Wildfire Exposure." It applies to new construction and certain alterations of buildings in:

• Very High Fire Hazard Severity Zones (VHFHSZ) — designated by CAL FIRE
• Wildland-Urban Interface (WUI) areas — generally larger than VHFHSZ
• State Responsibility Areas (SRA) in certain hazard tiers

For roofing specifically, the requirement is straightforward: your roof covering must be Class A, tested under ASTM E108 / UL 790. Wood shakes and wood shingles are explicitly prohibited, even Class A treated wood shakes in most jurisdictions.

What "Class A" means

Class A is the highest fire rating in the ASTM E108 / UL 790 test standard. To earn Class A, a roof assembly must:

• Resist flame spread (the "spread of flame" test)
• Resist burning brand penetration (a burning wood brand placed on the roof surface)
• Resist intermittent flame exposure (12-cycle test)
• Generally withstand a 6×6×2.25 inch burning brand without ignition propagating

Materials that earn Class A by themselves:

• Metal — all types (standing seam, stone-coated, corrugated, tile-look, shake-look)
• Clay tile
• Concrete tile
• Slate

Materials that earn Class A only with the correct assembly (underlayment + accessories):

• Class A asphalt shingles (specific products with Class A rating + proper underlayment)
• Modified bitumen with reflective cap sheet

The distinction matters because the contractor must document the assembly during plan check. Metal is the simplest path because the material itself is Class A — no accessory documentation needed.

Am I in a VHFHSZ?

Two ways to find out:

1. CAL FIRE FHSZ viewer — visit egis.fire.ca.gov/FHSZ/, type your address. The map shows whether your specific parcel is in VHFHSZ, HFHSZ, or moderate.
2. Local jurisdiction map — LA City and LA County both have local VHFHSZ maps that may differ slightly from CAL FIRE state maps (local jurisdictions can add zones but not remove). Check the LA Fire Department's FHSZ recommendation map.

If both sources say VHFHSZ, Chapter 7A applies. If they disagree, the more conservative (VHFHSZ) generally controls.

The March 2025 CAL FIRE update added significant new VHFHSZ acreage in LA County following the Palisades and Eaton fires:

• Expanded zones in Pacific Palisades, Topanga, and Malibu Hills
• New / expanded zones in Altadena, La Cañada Flintridge, and the foothills above the 210 Freeway
• Expanded zones in Tarzana, Encino Hills, and north-of-Mulholland portions of Sherman Oaks / Studio City
• Expanded zones in Sylmar, Chatsworth, and Granada Hills (San Fernando Valley north)

When does Chapter 7A trigger on my project?

Three scenarios:

• New construction in VHFHSZ: Chapter 7A applies to everything — roof, siding, vents, eaves, gutters, decking, fences within 5 feet.
• Rebuild after fire loss: Chapter 7A applies fully — your rebuild is essentially new construction for code purposes.
• Reroof of an existing home in VHFHSZ: Chapter 7A applies to the roof. You must install Class A material. The rest of the home doesn't have to be upgraded unless you're also altering those components.

The "like-for-like exemption" people sometimes ask about: it doesn't help with the roof. Even if you had wood shakes before and the home is otherwise unchanged, you can't replace them with wood shakes in VHFHSZ. The Class A requirement applies regardless.

What about my vents, eaves, and gutters?

Chapter 7A is bigger than just the roof, though the roof is the highest-visibility component. Other requirements that often surprise homeowners:

• Vents: CRC R337.6 requires ember-resistant vents (1/8 inch corrosion-resistant non-combustible mesh) or covered with non-combustible material. Standard aluminum mesh and plastic vents don't qualify.
• Eaves: CRC R337.7 requires enclosed eaves with non-combustible material — open-rafter exposed-wood eaves are prohibited.
• Gutters: CRC R337.5.4 requires gutters to prevent debris accumulation or be fitted with non-combustible covers (ember-resistant gutter guards).
• Decking within 10 feet of structure: CRC R337.9 requires non-combustible decking material — wood is prohibited in this zone.
• Siding: Non-combustible or ignition-resistant siding only.

A reroof project usually addresses the roof + sometimes vents/gutters as integrated work. Full rebuild projects address everything. Plan accordingly.

The permit process — what to expect

Stage	Duration	What happens
Design / material selection	2–6 weeks	Choose Class A material. Get contractor quotes. Confirm CRRC cool-roof compliance for Title 24.
Permit application	1 week	Contractor files plans with LADBS (City of LA), LA County DPW (unincorporated), or local jurisdiction (Pasadena, Burbank, Glendale, etc.).
Plan check + corrections	3–8 weeks	Plan checker reviews material spec, Chapter 7A compliance documentation, structural sign-off. Corrections may bounce back 1–2 times.
Permit issued + install	3–7 days install	Tear-off, underlayment, install, flashings. Inspector visits at key milestones.
Final inspection + certificate	1–2 weeks	Building inspector signs off. Contractor provides Chapter 7A compliance documentation for insurance filing.

What about my insurance?

A Class A roof is increasingly a baseline requirement for California homeowners insurance — both for renewing with a private carrier (where they're still writing) and for FAIR Plan eligibility. Submit your post-installation certificate to your carrier so it appears in your underwriting file. Specific insurance benefits vary by carrier and depend on your full home-hardening profile (defensible space, vents, eaves, siding) — discuss with your insurance agent or broker.

Common Chapter 7A mistakes to avoid

• Choosing a contractor unfamiliar with Chapter 7A. Many LA roofers handle non-fire-zone work and don't understand the documentation requirements. Ask explicitly about their last three Chapter 7A projects.
• Asphalt without verified Class A rating. Generic asphalt shingles aren't automatically Class A. The specific manufacturer SKU and the underlayment system must be Class A together. Plan check will catch this — but only after delaying your project.
• Ignoring the vents and gutters. Many homeowners replace the roof and forget about the vents and gutters. The result is technical non-compliance even with a beautiful new Class A roof.
• Skipping the post-install certificate. Without documentation, your insurance carrier won't know your roof was upgraded. Get the certificate before final payment.
• Trying to keep wood shakes "like-for-like." This doesn't work in VHFHSZ. Wood is prohibited regardless of prior installation.

Pre-construction checklist (before you sign any contract)

If you are about to sign a roofing contract for a VHFHSZ home, walk through this list with your contractor. Every item should have a clear, written answer in the proposed scope of work:

1. Exact roof material specification — manufacturer, product line, SKU/model number, color. Not "metal standing seam" — "Englert Series 1300 standing seam, 24-gauge, Slate Gray PVDF, 16-inch panel." This level of specificity allows you to confirm the Class A rating online with the manufacturer.
2. Cool-roof CRRC product ID — the contractor should provide the CRRC product certificate ID. You can verify it at coolroofs.org. This document is what plan check wants to see.
3. Underlayment specification — for Class A asphalt, the underlayment is part of the rating. The contract should name the specific underlayment product.
4. Flashing material specification — non-combustible (galvanized steel, copper, or aluminum). No exposed plastic.
5. Vent product and ember-resistance certification — if vents are being replaced or added, name the product and confirm CRC R337.6 compliance.
6. Gutter system — non-combustible material plus debris management strategy. Either gutter guards from a named manufacturer or documented maintenance plan.
7. Permit responsibility — the contractor pulls the permit, not you. Confirm in writing.
8. Inspection responsibility — the contractor schedules and meets inspectors at each milestone.
9. Post-install certificate — explicit commitment to provide compliance documentation for your insurance filing.
10. Warranty terms — material warranty (manufacturer, separate document) and workmanship warranty (contractor, 5–10 years typical). Both in writing.

What plan check actually looks at

For a VHFHSZ reroof permit, the plan checker reviews submitted documents in this order. Knowing what they want speeds up your contractor's preparation:

• Site plan showing the address is in VHFHSZ (referencing CAL FIRE or local jurisdiction map).
• Material specification sheets for the proposed roof covering — Class A test certification visible.
• CRRC product certificate for cool-roof compliance (Title 24 part).
• Underlayment specification (especially for Class A asphalt assemblies).
• Structural assessment if changing material weight class significantly.
• Contractor's CSLB license verification.
• Permit fees (vary by jurisdiction).

If a contractor's submission is missing any of the above, plan check returns it for corrections — typically a 1–2 week delay per round-trip. A contractor who knows Chapter 7A submits clean the first time.

Related resources

• Insurance non-renewal: 4-step roof game plan
• Pacific Palisades rebuild guide
• Altadena rebuild guide
• Ember-resistant gutter guards (CRC R337.5.4)