Do Aluminum Walls Offer Better Fire Resistance Than Drywall Boards?

Both aluminum panels and fire-rated gypsum wallboard offer non-combustible properties, but aluminum walls bring unique fire performance benefits when specified correctly. Gypsum board relies on tightly bound water molecules within its core to resist fire; once the core dehydrates, fire can penetrate. Aluminum panels, constructed from non-combustible alloys, do not release combustible gases or degrade structurally under direct flame exposure. When integrated into tested fire-rated wall assemblies—complete with mineral wool insulation and fire-resistant seals—aluminum panels maintain their shape and integrity without spalling.

Moreover, aluminum’s high thermal conductivity can help distribute heat away from points of fire contact, slowing localized temperature spikes. The absence of organic binders or paper facers eliminates smoke-producing materials, aiding safe egress. While individual panel ratings depend on assembly tests (ASTM E119 or EN 1364-1), properly engineered metal wall systems can achieve up to two-hour fire resistance, matching or exceeding many Type X gypsum installations. For buildings requiring both stringent fire safety and the clean aesthetics of metal facade interiors, aluminum walls provide a compelling, code-compliant solution.