Best Spray Paint for Cast Iron: Furniture, Radiators & Stoves
Painting cast iron? Use rust-inhibiting enamel for furniture, heat-resistant paint for radiators and high-heat paint for stoves and grills. Prep, primer and steps.
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The best spray paint for cast iron depends on heat. For garden furniture, gates and décor, use a rust-inhibiting enamel spray (for example Rust-Oleum Stops Rust or a hammered metal finish). For radiators, use a heat-resistant radiator enamel. For stoves, fire pits and grills, use a high-heat paint rated for the temperature. Never paint the cooking surface of cast-iron cookware – season it instead.
Which spray paint for which cast iron
| Item | Paint type | Heat rating |
|---|---|---|
| Garden furniture, gates, planters | Rust-inhibiting enamel / hammered finish | Normal |
| Radiators | Radiator enamel | Rated for radiator heat (steam radiators can exceed 200°F / 93°C) |
| Wood stoves, fire pits, grills (outside) | High-heat paint | 1,200°F (650°C) or higher |
| Cast-iron pans (outside only) | High-heat paint on exterior only | As rated |
| Cooking surface | Don’t paint – season with oil | — |
- Ideal for use on automotive parts and surfaces subject to intermittent high heat up to...
- Tough enamel features Stops Rust formula to prevent corrosion and rust with ultimate...
- Dries to touch in 30 minutes, covers up to 10 sq. ft. per can
- Durable, long lasting coating protects against grease, oil, gas, salt, rust, humidity and...
- Creates a smooth, flat protective finish to renew the look of your car or truck
- HIGH HEAT SPRAY PAINT: Protective enamel retains its color and finish on metal surfaces...
- RUST & CORROSION PROTECTION: Durable coating helps protect high-heat metal surfaces...
- IDEAL FOR HIGH-HEAT SURFACES: Refresh and protect the exterior of barbecue grills...
- FAST-DRYING FORMULA: Dries to the touch in approximately 30 minutes and covers up to 7 to...
- LONG-LASTING COLOR RETENTION: Maintains a durable, attractive finish after repeated...
- The information below is per-pack only
- Ideal for updating the exterior of barbeque grills, wood-burning stoves, radiators...
- Oil-based formula designed to renew and protect metal surfaces subject to heat up to...
- Covers up to 7-8 sq. ft. and dries to the touch in 30 minutes
- Retains excellent color retention after repeated heating
- Ideal for automotive parts exposed to intermittent temperatures up to 2000°f including...
- Rust preventive formula resists Oil, gas, grease and environmental elements including...
- Dries to touch in 30 minutes and covers up to 10 sq ft, for optimal performance allow...
- Durable, long-lasting finish provides a protective finish that helps items last
- Any-angle spray technology allows the can to be sprayed in any direction, even upside down
How to spray paint cast iron
- Remove loose rust and old paint with a wire brush or wheel.
- Degrease and dry thoroughly.
- Prime with rust-inhibiting primer (not needed for most high-heat paints – check the can).
- Spray 2–3 light coats from 25–30 cm (10–12 in).
- For high-heat paint, cure it by heating gradually as the can instructs.
Frequently asked questions
What paint is best for cast iron outdoors?
A rust-inhibiting enamel or hammered metal spray paint over a clean, rust-free surface.
Can you spray paint a cast-iron stove?
Yes, with high-heat stove paint, cured as the label instructs.
Can I paint a cast-iron skillet?
Never paint the cooking surface. Season it with oil instead.
