Do You Have to Season a Grill? By Grill Type

You only have to season a grill if its cooking surface is bare cast iron or bare steel. Porcelain-coated grates and most stainless grates don’t need it, though nearly every new grill benefits from a short burn-off first. Check your owner’s manual, then use the grate-type table below to decide.

Do you have to season a grill? Answer by grill type

Seasoning means heating a thin layer of oil past its smoke point so it bonds to the metal. That layer helps prevent rust and sticking. Whether you need it depends on the grate material, not on whether the grill burns gas, charcoal or pellets.

Cooking surface	Season it?	Why
Bare cast iron grates	Yes	Raw iron rusts quickly and sticks without an oil layer.
Carbon steel or flat-top griddle	Yes	Same reason. Bare steel needs a polymerized oil coat.
Porcelain-enameled cast iron or steel	No	The glass-like coating already protects the metal. Weber says its porcelain-enameled grates don’t need seasoning.
Stainless steel rods or grates	Usually no	Stainless resists rust. A light oil wipe before cooking helps with sticking.
Chrome-plated wire racks	No	Plating can flake with high heat. Just clean and oil lightly before cooking.

Manufacturers differ, so the manual wins over any general rule, including this one.

What about gas, charcoal, kamado and pellet?

• Gas: Seasoning depends on the grates. Many gas grills ship with porcelain-coated or stainless grates, so only a burn-off is typical.
• Charcoal: Cheap kettles and barrel grills often have bare cast iron or plated steel grates. Check which you have.
• Kamado: The ceramic body doesn’t get seasoned. Only the grate matters, and many are stainless or porcelain-coated. Cast iron add-on grates do need it.
• Pellet: Many manuals call for a first burn-in to run the auger and burn off residue, and that’s separate from seasoning grates. Time and temperature vary by model.

How to tell which type of grate you have

Many guides skip this step, and it decides everything. Try these checks, in order:

1. Look up the model number. The manual or the manufacturer’s parts page usually names the grate material.
2. Look at the finish. A smooth, glossy, glass-like coating means porcelain. A dull, rough, dark gray surface means bare cast iron. Shiny silver rods mean stainless.
3. Check for chips. On porcelain grates, chips expose dark metal underneath. That spot can rust, so wipe a little oil on it.
4. Try a magnet. Cast iron and steel are magnetic. Stainless varies by grade, and some types are magnetic too. A magnet alone can’t settle it, so use it only alongside the other checks.

Decision rule: if the surface is dull and rough and your manual says cast iron without a coating, season it. If it’s glossy or you can’t tell, follow the manual and skip seasoning, but do the burn-off.

How to season grill grates, step by step

These steps fit bare cast iron and steel grates. Your manual’s temperature and time override the ranges below.

1. Wash new grates. Use mild dish soap and hot water to remove shipping wax or oil, then rinse. Charbroil and Char-Griller both warn against dishwashers and air-drying cast iron because it rusts.
2. Dry completely. Towel dry, then warm the grates briefly on the grill to drive out moisture.
3. Apply a thin coat of oil. Use a paper towel held with tongs and wipe every surface, including the underside. Wipe off the excess so the grate looks almost dry. Too much oil leaves a sticky finish.
4. Heat the grill. Manufacturer and expert guidance ranges from about 350 to 400°F. Char-Griller suggests 400°F for 40 minutes. Charbroil says to run it until the oil stops smoking, around 15 minutes. Ignore the clock and watch the smoke: when it thins out, the oil has bonded.
5. Cool naturally. Let the grates cool in the grill. Don’t quench them with water.
6. Repeat if needed. Two or three thin coats beat one thick one. The surface should turn dark and slightly glossy.

Which oil should you use?

Pick a high smoke point oil such as canola, grapeseed or vegetable oil. Bacon fat is also a common choice. Avoid olive oil, which smokes and turns bitter at lower temperatures. Check your manual, because some brands name a specific oil. Charcoal and kamado owners can use the same method, with the fire built to the target temperature. A flat-top has the same logic, and our flat-top grill roundup covers which surfaces ship bare steel.

Is a burn-off needed on a new grill, and how long?

A burn-off isn’t seasoning, but it’s worth doing even with porcelain or stainless grates. It burns away manufacturing oils, dust and residue before food touches the surface.

• Gas: Many manuals say to run the burners on high for roughly 10 to 15 minutes. Some call for the lid open and others closed, so check yours.
• Charcoal and kamado: Light a normal fire and let it burn to the target temperature, often 350 to 400°F. Use the same charcoal you plan to cook with. Kamado Joe owners can pick one from our roundup of BBQ grills and smokers if they’re still shopping for a setup.
• Pellet: Follow the burn-in routine in the manual. It typically runs 30 minutes or more at a set temperature, but the details are model-specific. Cleaning habits matter after that, so see our guide on cleaning a pellet grill.

Expect some smoke and an odd smell the first time. If the smell hasn’t faded after a second session, check that you removed all packing material and stickers.

Safety steps and the cooking spray mistake

Common mistake: using cooking spray. Nonstick spray has a low smoke point and burns off even on low heat, according to Char-Griller. It leaves a gummy residue instead of a bonded layer. Aerosol cans are also flammable, so never spray one over a lit burner or hot coals.

Keep these rules in mind:

• Season and burn off outdoors, with the grill well away from your house, deck rails, fences and overhangs. Follow your manual’s clearance distances.
• Expect heavy oil smoke. Open the lid or ventilate if the manual says to.
• Don’t oil the grates by hand while hot. Use tongs and heat-safe gloves.
• Use only a thin coat. Pooled oil can flare up and start a grease fire.
• Stay with the grill the whole time.
• Let the grates cool fully before you handle or clean them.

If a grease fire starts, close the lid and shut off the gas or close the vents. Don’t use water on it.

How to keep the seasoning and fix sticky or rusty grates

Seasoning isn’t a one-time job. Char-Griller says to repeat it at least twice a year. Other sources suggest every 2 to 4 months. Go by condition: re-season when the grates look dry, dull or show rust.

Between cooks

• Brush the grates while still warm.
• Wipe on a very thin film of oil after cleaning.
• Keep the lid closed and the grill covered in damp climates.

Troubleshooting

• Sticky surface: You used too much oil. Heat the grates again until smoking stops, or scrub and redo with a thinner coat.
• Flaking: The coat was too thick or applied to a dirty grate. Scrub off loose bits with a grill brush, then re-season.
• Rust spots: Scrub with a brush or steel wool, wash, dry completely, then season again.
• Food still sticks: Preheat longer before adding food. Porcelain and stainless grates still need a hot, clean surface and a light oil wipe.

If you want a cast iron surface you can season and take off the grill easily, our Lodge reversible cast iron grill/griddle review covers one option. Owners of porcelain-grate models can browse our Weber grill picks, and pellet buyers can check the best wood pellet grills.

Our Top Picks

Ready to shop? These are the top-rated options from our hands-on roundup, Best 4 Burner Grill of 2026.

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Frequently Asked Questions

Do porcelain-coated grill grates need to be seasoned?

No. The porcelain enamel already protects the metal, and Weber says its porcelain-enameled grates don’t need seasoning. Clean them, wipe on a light coat of oil before cooking if food sticks, and avoid scraping hard enough to chip the coating.

What happens if you don’t season a bare cast iron grill grate?

The grate is more likely to rust and food is more likely to stick. Rust can show up after just a few humid days. You can usually fix it by scrubbing off the rust, drying the grate fully, and then seasoning it.

Can you season grill grates in the oven?

Often yes, if the grates fit and the manufacturer allows it. Coat them thinly and bake at the temperature your manual or the grate maker suggests. Expect smoke, and line the oven rack below to catch drips. Check the manual first.

Is it safe to use olive oil or cooking spray to season a grill?

Not recommended. Olive oil has a lower smoke point and can turn bitter. Cooking spray burns off quickly, leaves residue, and is flammable near flame. Use a high smoke point oil like canola, grapeseed or vegetable, applied in a thin coat.

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