How does ACP perform under UV exposure compared to PVC siding?

Aluminum composite panel (ACP) cladding exhibits superior UV resistance and color stability compared to PVC siding when used on facades and ceilings exposed to sunlight. ACP panels are coated with factory-applied PVDF (polyvinylidene fluoride) or polyurethane finishes that incorporate UV-stabilized pigments and resins. These coatings resist chalking, fading, and micro-cracking for 20–30 years, as certified by accelerated weathering tests. PVC siding, although marketed as low-maintenance, tends to yellow and warp under prolonged UV exposure, especially in high-altitude or tropical climates. PVC formulations require titanium dioxide and UV inhibitors, but over time plasticizers migrate to the surface, causing brittleness and stress cracking. Additionally, ACP’s aluminum substrate provides dimensional stability across temperature fluctuations, whereas PVC expands and contracts more significantly, risking joint sealant failure. For aluminum ceiling applications in outdoor canopies or sunrooms, ACP maintains a uniformly smooth finish and precise panel alignment without deformation. Overall, ACP cladding offers a more durable, color-fast solution for UV-intense environments compared to PVC siding products.