Best Overall
Rust-Oleum Professional Enamel
- Coverage
- Up to 14 sq ft per can
- Surfaces
- Ferrous and non-ferrous metal
- Dry And Recoat
- Touch dry 15 min, recoat in 1 hour
- Rust Protection
- Oil-based corrosion-resistant enamel
Pros
- Oil-based enamel formulated for ferrous and non-ferrous metal
- Any-angle high-output tip reaches brackets and undersides
- Touch dry in 15 minutes, recoat within the hour
- Rust-protective film that holds colour outdoors
Cons
- Sold only as a six-pack
- 14 sq ft per can is modest for railings
Bare steel, a rusted gate, the underside of a patio chair: this is the can we reach for when the metal itself is the job rather than one line on a surface list. Rust-Oleum builds the Professional line as an oil-based enamel for ferrous and non-ferrous metal, with wood and masonry along for the ride, and the film is meant to hold its colour against weather instead of sitting on top of it.
Two details put it at the top of this list. The high-output tip sprays at any angle, which is the difference between coating the inside of a railing bracket and giving up on it, and the 15-minute touch dry with a one-hour recoat window means the second coat goes on before you have lost the afternoon. The gloss black lays down evenly and holds its shine, which is most of what an outdoor railing asks for.
The cans themselves are the thing to plan around. Individual cans turn up that will not spray at all, or that push out paste instead of paint, so shake each one hard and test it on a scrap panel before you commit it to a finished surface — and buy where returning a pack is easy. When a can is good the fan is even and the coat covers as promised; the failures are per can, not per formula.
What keeps us coming back is how little it asks of you: two coats in an afternoon and a finish that looks sprayed because it was. This is the can we hand people who are painting metal to keep it, not to decorate it.
Bottom line: Our default for metal that lives outdoors: an oil-based enamel built for ferrous and non-ferrous steel, with any-angle spraying and a one-hour recoat.
Check Latest Price