United States / Build / Westlake Unified Steel Barrel-Vault, Pine-Crest, and Pacific stone-coated roofing

Westlake Unified Steel Barrel-Vault, Pine-Crest, and Pacific stone-coated roofing

Name: Westlake Unified Steel Barrel-Vault, Pine-Crest, and Pacific stone-coated roofing
Brand: Westlake Royal Roofing LLC

This is a listed roofing assembly. Listing 8180-2415:0002. This site cites ASTM E108 / UL 790. Match the model and orientation.

Westlake's Unified Steel specification identifies Barrel-Vault Tile, Pine-Crest Shake, and Pacific Tile as aluminum-zinc alloy-coated steel roof panels. Its product literature states that the profiles have systems meeting ASTM Class A fire-rating criteria. CAL FIRE OSFM listing 8180-2415:0002 names the same three profiles in the WUI roof-covering category.

Kind: listed-assembly. Brand: Westlake Royal Roofing LLC. Listing evidence: OSFM WUI handbook 2026-08-25. Page reviewed 2026-08-25. JSON (CC BY 4.0)

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Documented attributes

Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.

Attribute	Value	Evidence source
Form
Assembly role	roof covering	Unified Steel stone-coated roofing architectural specification (manufacturer)
Material
Material	steel	Unified Steel stone-coated roofing architectural specification (manufacturer)
Fire
Fire rating	class a	Unified Steel features and benefits (manufacturer)
Test standard	astm e108	Unified Steel features and benefits (manufacturer)

Where this product goes

FA Exhibit ROF-100. The roof system, named

Published requirement matches

These links are generated from the cited attributes above. They do not decide installation or a project result.

IBHS Base Class A roof covering · California and Oregon program applicants
Kittitas high/extreme Class A roof covering · Unincorporated Kittitas County high and extreme fire-hazard areas outside a fire department
Kittitas low/general Class C roof floor · Unincorporated Kittitas County, subject to more restrictive hazard-class rows
Kittitas moderate Class B roof floor · Unincorporated Kittitas County moderate fire-hazard areas outside a fire department
2006 Utah UWUI Class A roof covering · Utah local compliance agencies adopting the 2006 Utah Wildland-Urban Interface Code

Program	ID / source	Evidence date	Expires	Status
CAL FIRE BML	8180-2415:0002 · Search BML for 8180-2415:0002	2026-08-25	2027-06-30	listed

Tests and programs cited

ASTM E108 / UL 790 · test-method
OSFM BML · listing-program

Models named on the listing

Model	Application
BARREL-VAULT
PINE-CREST
PACIFIC

Specification notes

Class A applies to a complete tested roof system, not to an isolated panel. Match the current OSFM data sheet's deck, underlayment, slope, batten or direct-to-deck method, fastening, and profile.
The offline live BML description stops after introducing the approved Class A roof systems and does not preserve their assembly conditions. Do not infer that every manufacturer installation option is covered; verify the current data sheet before specification.

Can I use this here

Local force

The rule and every matching product for the United States

Requirement constraints (5)

Each table compares this product's documented attributes with one published requirement. The comparison does not change from place to place, so it is printed once.

Kittitas high/extreme Class A roof covering matched
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Fire rating	Fire rating = class a	class a	matched

Kittitas low/general Class C roof floor matched
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Fire rating	Fire rating is one of class a, class b, class c	class a	matched

Kittitas moderate Class B roof floor matched
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Fire rating	Fire rating is one of class a, class b	class a	matched

2006 Utah UWUI noncombustible roof covering undocumented
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Noncombustible	Noncombustible = Yes	Not documented	undocumented

2006 Utah UWUI Class A roof covering matched
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Fire rating	Fire rating = class a	class a	matched

Sources

OSFM Building Materials Listing (live database) — CAL FIRE OSFM (listing-body). Accessed 2026-08-25.
Unified Steel stone-coated roofing architectural specification — Westlake Royal Roofing LLC (manufacturer). Accessed 2026-08-25.
Unified Steel features and benefits — Westlake Royal Roofing LLC (manufacturer). Accessed 2026-08-25.
Unified Steel roof-load technical bulletin — Westlake Royal Roofing LLC (manufacturer). Accessed 2026-08-25.

Westlake Unified Steel Barrel-Vault, Pine-Crest, and Pacific stone-coated roofing. FireApproved. https://fireapproved.com/materials/westlake-royal-roofing-llc-unified-steeltm-stone-coated-roofing-models/. Last verified 2026-08-25.