Oil- and water-based metal paints come in large cans, for use with brushes or rollers, or aerosol cans, for spray application. Spray paint cans offer more complete coverage of irregular surfaces. Keep in mind that exposing water-based paint directly to metal can rust it, so apply an oil-based primer before application.
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A typical acrylic paint (BEHR PRO e600 Acrylic Paint, $23.98 per gallon at The Home Depot) also has less organic material than oil paint so it’s less likely to form mildew and mold, making it a better option for moisture-prone areas like kitchens and baths. However, it will be more vulnerable to dents, stains, and scuffs. Acrylic paint, made of pigments, acrylic resins, and water, emits fewer fumes and dries to the touch in under an hour into a flexible coat resistant to cracking, chipping, and fading. If painting light to moderately used indoor metal surfaces-think wall sconces, bed frames, or guest room night tables-go with water-based acrylic paint, a cheaper ($15 to $40 per gallon), faster-drying option than oil paint.
Water-based paints offer faster drying and fewer fumes. Skipping primer may save you time on the paint job, but you’ll still wait a bit longer for oil-based paint to dry to the touch (usually six to eight hours). However, you can apply oil paint directly to metal because it contains no water, and therefore there’s so no risk of rust. You’ll achieve a more uniform finish if you first apply an oil-based primer (e.g., Rust-Oleum Clean Metal Primer, $8.98 per quart on Amazon). Oil paint is, however, vulnerable to cracking or chipping, and it also tends to fade over time, so consider a product with built-in fade protection, such as Rust-Oleum Hammered Metal Finish ($12.98 per quart on Amazon). Generally pricier than water-based paint ($20 to $50 per gallon), it’s formulated with pigments, alkyds (synthetic resins) or plant-based oil, and solvent (that emit smelly fumes during application) to cure to a rigid coat that repels water and stains and resists dents and scuffs. Opt for oil-based paint if painting outdoor metal surfaces such as fences, patio furniture, or backyard grills, as well as heavily used indoor items like kitchen cabinets and window frames. Photo: Oil-based paints are the most durable.
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