When selecting urban outdoor leisure chairs, moisture resistance and mildew prevention are critical factors for longevity and maintenance. Among common materials, aluminum stands out for its exceptional moisture resistance as it is inherently non-porous and cannot rust under normal conditions, though powder-coated finishes provide additional protection. Synthetic resin, particularly high-density polyethylene (HDPE), offers excellent moisture resistance and is naturally impervious to mildew, making it a top choice for humid environments.
Traditional wood chairs, while aesthetically pleasing, require regular sealing to prevent moisture absorption and mildew growth, with teak performing best naturally due to its high oil content. Plastic chairs are moisture-resistant but can develop mildew on surfaces if not properly cleaned. For optimal performance in damp urban settings, aluminum and synthetic resin materials provide the most reliable combination of moisture resistance and mildew prevention with minimal upkeep.