When investing in a wrought iron garden bench, you want it to last for decades. The single most durable finish you can choose is a professional powder coating. This isn't just paint; it's a dry powder electrostatically applied and then baked into a hard, seamless shell. It far outperforms standard spray paints by being highly resistant to chipping, scratching, fading, and moisture—the main enemies of iron.
For existing benches, a high-quality direct-to-metal (DTM) acrylic or oil-based enamel is an excellent durable option. Brands like Rust-Oleum Protective Enamel are formulated to inhibit rust. The key is meticulous prep: remove all loose rust with a wire brush, sand thoroughly, apply a rust-inhibitive primer, and then add at least two topcoats.
No finish is immortal. To maximize durability, place your bench in a partially shaded spot, clean it annually with mild soap and water, and immediately touch up any scratches or chips with matching paint to prevent rust from starting. With the right powder coat or properly applied specialized paint and simple care, your wrought iron bench will remain a beautiful, rust-free focal point for generations.