Cast aluminum is a popular choice for urban outdoor furniture due to its durability and stylish appeal. However, while aluminum itself doesn't rust, it can develop corrosion or surface oxidation when its protective finish wears off, especially in harsh weather. Here’s a practical guide to prevent this issue and maintain your furniture's beauty.
First, regular cleaning is essential. Use a mild soap solution and a soft brush or cloth to remove dirt, pollutants, and moisture that can degrade the finish. Rinse thoroughly and allow the furniture to dry completely. Avoid abrasive cleaners or steel wool, as they can scratch the protective coating.
Second, inspect the powder-coated or painted finish annually. Look for chips, cracks, or scratches that expose the bare metal. Touch up any damaged areas immediately with a matching, high-quality outdoor paint or a clear sealant designed for metal. This creates a barrier against moisture and oxygen.
Third, apply a protective wax or automotive paste wax designed for metal surfaces once or twice a year. After cleaning and drying the furniture, apply a thin, even layer. This adds an extra shield against humidity and rain.
Fourth, use furniture covers during extreme weather or long periods of non-use, especially in winter. Ensure the furniture is dry before covering to trap moisture. In very humid climates, consider storing pieces in a dry shed or garage.
Finally, place your furniture in a location with good air circulation to prevent moisture buildup. Avoid letting wet leaves or debris sit on the surface for extended periods.
By following these simple steps—regular cleaning, prompt touch-ups, applying protective wax, using covers, and ensuring proper placement—you can effectively prevent rust and corrosion, ensuring your cast aluminum furniture remains a sleek and lasting feature of your urban outdoor space for years to come.