Explore Class A roofing systems, underlayments, and components verified through recognized testing and certification standards.
Not all “fire-resistant” materials meet Class A fire-rating requirements.
A roof assembly only qualifies as firesafe when every component—from the covering to the underlayment—has been tested together and listed by an approved agency such as UL, ICC-ES, or CAL FIRE.
Improper substitutions (for example, replacing the specified underlayment) can void the system’s rating and create false compliance claims.


All assemblies have been tested to UL 790 / ASTM E108 Class A standards when installed per the manufacturer’s listing.
Fiberglass-reinforced asphalt shingles with embedded fire-resistant mineral granules.
UL 790 Class A when installed over listed underlayment
Non-combustible steel or aluminum panels; requires fire-rated substrate.
ICC-ES ESR + UL Listing
Dense, non-combustible materials; Class A when installed with listed batten/underlayment system.
CAL FIRE BML / UL
Polymer or recycled blends engineered for Class A assembly performance.
ICC-ES ESR
Multi-ply, mineral-surfaced membranes with Class A assemblies.
UL 790 / ASTM E108
Underlayment forms the secondary ignition barrier beneath the roof covering.
Vents and flashings are common ignition points.
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