Aluminum siding is exterior cladding made from aluminum panels, valued for excellent corrosion resistance, particularly in coastal environments where salt air exposure can accelerate deterioration in less resistant materials, along with aluminum’s naturally lighter weight compared to steel siding alternatives.
This corrosion resistance advantage has made aluminum a historically popular choice, especially prevalent in mid-twentieth-century construction and still favored today in coastal regions where its performance genuinely outshines less naturally resistant materials.
Because aluminum is a relatively soft metal compared to steel, it can dent more easily from hail or physical impact, a tradeoff worth considering particularly for homes in regions facing both coastal exposure and hail risk simultaneously.
What Does Aluminum Siding Involve?
- Aluminum panels in various profiles
- Factory-applied paint finishes
- Natural resistance to corrosion, especially valuable near salt water
- Lighter weight than comparable steel siding
Why Is Aluminum Siding Important?
In coastal or high-humidity environments where salt exposure accelerates corrosion in less resistant materials, aluminum’s natural resistance to this specific deterioration mechanism offers a genuinely well-suited performance advantage that has kept it relevant in these particular climate conditions for decades. This targeted suitability explains aluminum siding’s continued popularity in coastal residential markets specifically.
Painted aluminum siding installed decades ago sometimes shows chalking, a powdery surface residue from paint degradation over time, a cosmetic issue that can often be addressed through cleaning or repainting rather than requiring full siding replacement. This straightforward fix helps preserve the material’s appearance well into its extended service life. This practical knowledge helps homeowners maintain an older aluminum-clad home effectively.
Aluminum Siding vs. Steel Siding
Aluminum siding offers excellent corrosion resistance and lighter weight, with somewhat less impact resistance. Steel siding offers greater strength and dent resistance, though it requires more careful attention to coating integrity to prevent corrosion if that protective layer is compromised.