Fire-Resistant Metal Roofing in Malibu, Built as a Class A Assembly

Why Fire Is Part of Every Malibu Roof Conversation

Anyone who has lived in Malibu for a while has a fire in their memory. The Woolsey Fire in November 2018 burned through the Santa Monica Mountains and into the city. The Franklin Fire in December 2024 started near Malibu Canyon and moved toward the coast. The Palisades Fire in January 2025 reached homes along Malibu's eastern coastline. Each one left families rebuilding, and each one changed how people here think about the outside of a house.

We do not bring that up to sell anything. We bring it up because it is the context every Malibu homeowner already carries into a roofing decision, and the honest response to it is information. A roof cannot make a house safe from a wildfire. A well-built roof can remove one of the easiest ways a fire gets in, and that is worth understanding properly.

The City of Malibu states plainly that the entire city sits in a Very High Fire Hazard Severity Zone. Its Fire Safety page covers brush clearance, home wildfire assessments and the other steps the city asks of property owners. That designation is the reason the state's wildland-urban interface rules apply to roofs across Malibu, from Point Dume to Big Rock.

What "Class A" Actually Means

Roof fire ratings come from a standard test, published as ASTM E108 and UL 790. The rating describes how a roof covering resists fire coming from outside the house. There are three classes. Class A resists severe exposure, Class B moderate exposure, and Class C light exposure. Class A is the top of the scale and the one California requires in its highest hazard zones.

The test is really three tests:

• The burning brand test. A burning block of wood is placed on the roof and left to burn out. It stands in for a large ember landing and sitting there. For Class A the brand is the largest of the sizes used.
• The spread of flame test. Flame is directed across the surface and the distance it travels is measured. Class A allows the shortest spread.
• The intermittent flame test. Flame is applied and pulled away in cycles to see whether the roof keeps burning on its own.

The burning brand test is the one that maps most closely onto a Malibu fire day. Wind-driven embers can travel well ahead of a fire front, and a roof that lets an ember smolder against something combustible is the weak point the test is designed to find.

The Rating Belongs to the Assembly, Not the Panel

This is the part most people never hear. Steel and aluminum are noncombustible, so a metal panel cannot catch fire or feed one. But many metal roofs earn Class A as a tested assembly: the panel, a specific fire-rated underlayment and a solid deck, tested and listed together. If the roof on your house was not built to match that listing, it is not the assembly that passed, even when the panel is identical.

So the useful question is not "is metal Class A?" It is "which listed assembly is going on my roof, and will I get that in writing?" We answer that question on every proposal. There is a longer explanation of the rating itself on our main site, under what a Class A fire rated roof really means.

What the California Code Asks of a Malibu Roof

California's wildland-urban interface standards live in Chapter 7A of the California Building Code and in Section R337 of the California Residential Code. For homes in a Very High Fire Hazard Severity Zone, they cover far more than the roof covering itself. Among other things, they address:

• Roof covering. A Class A roof assembly.
• Roof edges and gaps. Spaces between the covering and the deck at the eaves and ridge need to be closed off so embers cannot get in behind the roof.
• Valleys. Valley flashing details are specified so a valley does not become a channel for burning debris.
• Vents. Attic and roof vents need to resist ember and flame intrusion.
• Eaves and soffits. Exposed and enclosed eaves have their own rules.
• Gutters. Gutters are addressed because of the leaves and needles they collect.

The code is specific and it changes over time, and the details depend on your parcel and the scope of the work. We build to the current requirements and coordinate with the City of Malibu's building officials through the permit. If you want to see your own parcel's designation, the state Fire Hazard Severity Zone maps are published by CAL FIRE and the Office of the State Fire Marshal.

Where Embers Actually Get Into a Roof

Most homes lost in wildfires are not lost to a wall of flame. Embers find a gap, land on something that burns, and do their work slowly. On a roof, the places worth attention are always the same.

None of these details come in a box. They are formed on site, fitted to the roof, and they are where most of the hours in a well-built metal roof go. We fabricate our panels and trim in our own shop in Van Nuys and install with our own crew, so the details drawn on paper are the details that end up on the house.

Why Standing Seam Suits a Fire-Conscious Roof

Every roofing material that reaches Class A does it in its own way. Standing seam brings a few qualities that fit the Malibu setting well.

• A noncombustible surface. The covering itself cannot ignite.
• Few joints. Panels run from ridge to eave in one length wherever the roof allows, so there are far fewer seams and edges than on a roof made of small pieces.
• Raised, locked seams. The joints stand above the plane of the roof and are locked together, which leaves little for an ember to slip under.
• Concealed fasteners. Clips hold the panels down from underneath, so there are no exposed screw heads and washers across the field of the roof.
• A smooth face. Leaves and needles tend to slide off rather than collect, which helps, though it is not a substitute for keeping valleys and gutters clean.

To be clear about what a roof cannot do: no roof is fireproof. Class A is the highest tested resistance to fire from outside the building. It buys time and greatly reduces the chance a roof is the way a fire gets in. Brush clearance, vents, windows, decks and what sits next to the house all matter too, which is why the city's home wildfire assessment is worth booking.

Rebuilding After a Fire

For families rebuilding after Woolsey, Franklin or the Palisades Fire, the roof is one part of a much larger process, and it usually comes later in it. The public agencies are the right starting point. The City of Malibu keeps rebuild information on its own site, and Los Angeles County runs a recovery hub at recovery.lacounty.gov covering debris removal, permits and assistance.

When the roof does come up, we work with your architect and builder rather than around them. A rebuild is the best chance to get the roof assembly, eave construction and vents right together, because nothing has been closed up yet. We can review drawings early so the roof details are settled before framing, not discovered after it.

Questions Worth Asking Any Roofer

Whoever you hire, these questions will tell you a lot about how seriously they take fire-resistant metal roofing in Malibu:

• Which listed Class A assembly are you installing, and can I have the listing in writing?
• What underlayment is going under the panels, and is it the one in that listing?
• How will you close the eaves and the ridge?
• How will my skylights, vents and solar mounts be flashed?
• Who will actually be on the roof? Your own crew, or a subcontractor?

A roofer who builds these regularly will answer every one without hesitation. We have been fabricating and installing standing seam since 2006, under CSLB license #888710, and our own crew does every roof we sell. If you would like to talk it through, our about page explains how we work, and you are always welcome to call.