How is aluminum roofing superior to polymer coated metal roofing?

Aluminum roofing outperforms other polymer-coated metal roofs (such as coated steel) in several key aspects related to long-term durability and performance. The primary problem with polymer-coated metal roofs is their total reliance on the coating for corrosion protection. If this coating is scratched or damaged during transport or installation, or over time due to weathering, the underlying metal (usually steel) becomes exposed and immediately susceptible to rust. This rust can spread beneath the polymer coating, causing it to peel off and deteriorating the roof's appearance and integrity. Aluminum, on the other hand, offers twofold protection. First, the metal itself is naturally corrosion-resistant thanks to a self-healing, protective oxide layer. Second, our aluminum roofs come with advanced coatings (such as PVDF or powder coating) that are factory-applied using processes that ensure superior adhesion and exceptional durability. Even in the rare event that the coating is deeply scratched, the exposed aluminum will not rust; instead, it will immediately form its protective layer, preventing further deterioration. This inherent protection gives aluminum roofs a much longer lifespan and greater reliability.