How does ACP’s weather resistance compare to aluminum siding panels?

Aluminum composite panel (ACP) cladding and aluminum siding panels both leverage aluminum’s corrosion resistance, but ACP systems offer enhanced weather performance through multi-layer construction and engineered sealing. ACP panels consist of two aluminum skins bonded to a core and coated with high-performance fluoropolymer finishes that resist chalking, fading, and corrosion from pollutants and salt spray. Joints are sealed with neoprene gaskets and silicone, creating a continuous rain-screen barrier. Traditional aluminum siding often uses coil-coated sheet bent into profiles, relying on mechanical overlaps that may allow water ingress over time. Siding finishes typically employ polyester paints that degrade faster under UV exposure, leading to chalking and corrosion at exposed edges. ACP’s thicker aluminum skins (0.3–0.5 mm) withstand dents and abrasion better than thin siding. For facade and ceiling applications in coastal or industrial environments, ACP’s sealed rainscreen cavity and durable finish extend service life well beyond standard siding, minimizing repaint cycles and eliminating water-related issues. Overall, ACP delivers a more robust, weather-tight envelope compared to conventional aluminum siding systems.