For individuals with metal allergies, navigating public spaces can be a concern. A common question is: "I'm allergic to certain metals; what is this urban outdoor furniture finished with?" Fortunately, much modern urban furniture is designed with durability and public safety in mind, often utilizing finishes that create a protective barrier.
The most prevalent and safe finish is Powder Coating. This is a dry finishing process where electrostatically charged paint powder is applied to metal—typically steel or aluminum—and then cured under heat. It forms a thick, durable, non-porous layer that completely seals the underlying metal, making direct skin contact safe for most people with sensitivities.
Another excellent option is Anodized Aluminum. Anodization is an electrochemical process that thickens aluminum's natural oxide layer, creating a hard, integral surface that is highly resistant to corrosion. This finish is inherently hypoallergenic as it does not involve paints or coatings that can chip, locking the metal away from direct contact.
Furthermore, many furniture frames are made from Stainless Steel. Certain grades, particularly surgical-grade stainless steel, have very low nickel release, making them generally well-tolerated. Additionally, furniture may use Marine-Grade Polymer Coatings on metals or be constructed entirely from high-quality synthetic materials like recycled plastic lumber, which eliminate metal contact entirely.
When in doubt, look for a smooth, baked-on finish (powder coating) or the characteristic metallic sheen of anodized aluminum. For severe allergies, opting for seating areas with all-weather wood or solid plastic furniture provides complete peace of mind.