For a cosmetic refresh of a barbecue grill’s exterior, choose paint whose manufacturer specifically approves it for grill exteriors. Rust-Oleum High Heat Ultra is one such option; the manufacturer rates it for temperatures up to 1200°F (648°C). That rating does not make it suitable for grates, food-contact surfaces, or metal directly exposed to open flame.
What paint is suitable for a grill?
Choose a high-heat coating explicitly intended for the grill’s exterior, and check its label against your grill maker’s instructions and the part’s material. A temperature rating alone does not establish that a coating is safe for every surface or compatible with every grill finish.
Rust-Oleum High Heat Ultra is identified by its manufacturer for barbecue grill exteriors and is rated for temperatures up to 1200°F (648°C). This is the manufacturer’s stated resistance, not an independent comparative test. Its documentation excludes metal directly exposed to open flame and surfaces in direct contact with food, such as grill grates.
Rust-Oleum BBQ & Stove is another manufacturer-described option for exterior barbecue grills, also rated up to 1200°F (648°C). The available product information does not establish that either coating performs better, or that either works on every grill material.
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#1 Best Overall
- HIGH HEAT SPRAY PAINT: Protective enamel retains its color and finish on metal surfaces exposed to intermittent heat up to 1200°F.
- RUST & CORROSION PROTECTION: Durable coating helps protect high-heat metal surfaces against rust, corrosion, chipping, and outdoor weathering.
- IDEAL FOR HIGH-HEAT SURFACES: Refresh and protect the exterior of barbecue grills, wood-burning stoves, radiators, engines, fire pits, and fireplace screens.
- FAST-DRYING FORMULA: Dries to the touch in approximately 30 minutes and covers up to 7 to 8 square feet per can for efficient project completion.
- LONG-LASTING COLOR RETENTION: Maintains a durable, attractive finish after repeated heating for dependable indoor and outdoor metal protection.
Which grill parts should not be painted?
- Cooking grates: Do not use the cited High Heat Ultra coating on surfaces that contact food.
- Metal directly exposed to open flame: The cited High Heat Ultra documentation excludes it, regardless of the product’s temperature rating.
- Other parts with uncertain compatibility: Check the grill manufacturer’s instructions and the exact paint label before coating them.
How to prepare and paint the exterior
- Choose a suitable work area and conditions. Work outdoors or in a well-ventilated area. Rust-Oleum’s High Heat Ultra technical sheet, revision 051623, specifies an application temperature of 50–90°F (10–32°C) and humidity below 85% for proper drying.
- Clean the surface. Remove dirt, grease, oil, salt, and chemical contaminants. Rinse the surface and let it dry thoroughly.
- Remove loose material. Use a wire brush or sandpaper to remove loose paint and rust. Existing paint should be sound; abrade glossy finishes so the surface is no longer glossy.
- Protect surrounding areas. Cover nearby surfaces to keep spray mist off them. Follow the exact product container’s application directions; the cited High Heat Ultra sheet says not to prime and recommends light coats.
- Let the coating dry and follow its heating instructions. The High Heat Ultra technical sheet says to allow one hour before heating. For use above 500°F, it says heat curing is required and describes a one-hour cure at 450°F to improve performance and durability. These directions apply to that cited product; use the label instructions for the exact paint you buy.
How to handle old paint safely
Scraping or sanding old paint may release lead dust. Rust-Oleum advises using a NIOSH-approved respirator to control lead exposure when removing old paint. Follow the product warnings and use care to contain dust and overspray; do not assume an old coating is lead-free.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to compare grill paints
| Consideration | What to check |
|---|---|
| Approved use | Does the manufacturer explicitly identify the product for grill exteriors, and does it suit your grill’s material? |
| Heat rating and exclusions | What temperature does the manufacturer state, and does the label prohibit use near flame or on food-contact surfaces? |
| Format and finish | Choose a spray or brush-on format, color, and sheen that suit the part and the work area. |
| Preparation and cure | Check the required surface preparation, application conditions, drying time, and any heat-cure instructions for that exact product. |
The available manufacturer information identifies intended uses and directions, but does not provide a controlled durability comparison across products or grill materials. There is no established single best paint for every BBQ.
Quick Recap
Best Value
- Ideal for updating the exterior of barbeque grills, wood-burning stoves, radiators, engines or other metal items
- Oil-based formula designed to renew and protect metal surfaces subject to heat up to 1000°F
- Covers up to 65-130 sq. ft. and dries to the touch in 2-4 hours
- Retains excellent color retention after repeated heating
- Provides a rich satin finish that prevents rust, corrosion and chipping
Rank #4
- HIGH HEAT SPRAY PAINT: Protective enamel retains its color and finish on metal surfaces exposed to intermittent heat up to 1200°F.
- RUST & CORROSION PROTECTION: Durable coating helps protect high-heat metal surfaces against rust, corrosion, chipping, and outdoor weathering.
- IDEAL FOR HIGH-HEAT SURFACES: Refresh and protect the exterior of barbecue grills, wood-burning stoves, radiators, engines, fire pits, and fireplace screens.
- FAST-DRYING FORMULA: Dries to the touch in approximately 30 minutes and covers up to 7 to 8 square feet per can for efficient project completion.
- LONG-LASTING COLOR RETENTION: Maintains a durable, attractive finish after repeated heating for dependable indoor and outdoor metal protection.
Rank #3
- OIL-BASED PROTECTIVE ENAMEL: Renews and protects metal surfaces exposed to intermittent temperatures up to 1200°F.
- IDEAL FOR HIGH-TEMPERATURE SURFACES: Update the exteriors of barbecue grills, wood-burning stoves, radiators, engines, and other metal items.
- RUST & CORROSION PROTECTION: Durable coating helps prevent rust, corrosion, and chipping on indoor and outdoor metal surfaces.
- EXCELLENT COLOR RETENTION: Maintains its color and protective finish after repeated heating for long-lasting performance.
- FAST-DRYING FORMULA: Dries to the touch in approximately 2–4 hours for efficient project completion.
Rank #2
- The information below is per-pack only
- Ideal for updating the exterior of barbeque grills, wood-burning stoves, radiators, engines or other metal items
- Oil-based formula designed to renew and protect metal surfaces subject to heat up to 1000°F
- Covers up to 7-8 sq. ft. and dries to the touch in 30 minutes
- Retains excellent color retention after repeated heating
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