Can You Put Cast Iron Stove Grates In The Dishwasher

When it comes to maintaining the heart of your kitchen, your stove, it’s essential to keep all its components clean and functional. One often-overlooked but critical aspect of this is your cast iron stove grates. These sturdy, heavy-duty grates play a pivotal role in distributing heat evenly while you cook, making them an integral part of your cooking experience. But when they become encrusted with food residue and grease, the question arises: Can you put cast iron stove grates in the dishwasher?

The Short Answer

In short, no, you should not put cast iron stove grates in the dishwasher. While modern dishwashers are equipped with a variety of features and settings to clean your kitchenware effectively, cast iron grates require special care and attention.

Why Not Dishwasher-Friendly?

Cast iron stove grates are not dishwasher-friendly for several reasons:

1. Risk of Rust

Cast iron is susceptible to rust when exposed to water for extended periods. The dishwasher’s high-pressure water jets and prolonged exposure to moisture can accelerate the rusting process, potentially damaging your grates.

2. Harsh Detergents

Dishwasher detergents often contain abrasive chemicals and enzymes designed to break down food particles. These harsh detergents can strip away the seasoning—a crucial protective layer—on your cast iron grates.

3. Thermal Shock

Dishwashers use hot water and steam to clean dishes, and this drastic temperature change can cause thermal shock to your cast iron grates, leading to cracks or warping.

4. Food Residue Buildup

Despite their robust appearance, cast iron grates can have intricate designs and crevices that make it difficult for a dishwasher to reach and clean every nook and cranny. Food residue can accumulate over time, affecting the flavor of your dishes.

How to Clean Cast Iron Stove Grates?

Now that we’ve established that the dishwasher is not the way to go, let’s discuss how to clean your cast iron stove grates effectively:

1. Hand Washing

The best way to clean cast iron stove grates is by hand. Here’s a step-by-step guide:

a. Remove Grates

Start by removing the grates from your stove. Allow them to cool down if you’ve recently used your stove.

b. Soak in Hot Water

Fill a basin or sink with hot, soapy water. Submerge the grates and let them soak for about 15-20 minutes. The hot water will help loosen the stuck-on food particles.

c. Scrub Gently

Use a soft-bristle brush, sponge, or scrubbing pad to gently scrub away the food residue. Avoid using abrasive materials that can scratch the surface.

d. Rinse and Dry

Thoroughly rinse the grates with clean, hot water to remove any soap residue. Towel-dry them or let them air-dry completely.

2. Seasoning

Once your cast iron grates are clean and dry, it’s crucial to re-season them to maintain their non-stick properties. Here’s how:

a. Apply a Thin Layer of Oil

Using a paper towel or cloth, apply a thin layer of cooking oil (preferably one with a high smoke point, like vegetable oil) to the entire surface of the grates, including the bottom.

b. Heat in the Oven

Place the grates in a 350°F (175°C) oven for about an hour. This will help the oil polymerize and create a natural non-stick coating.

c. Cool and Store

Once the grates have cooled down, they are ready to be placed back on your stove for your next cooking adventure.


In summary, while it might be tempting to toss your cast iron stove grates into the dishwasher for a quick clean, it’s not a recommended practice. The dishwasher’s harsh detergents, high-pressure water, and thermal shock can damage your grates and compromise their performance. Instead, opt for gentle hand washing and proper seasoning to keep your cast iron stove grates in top-notch condition.

Remember, a well-maintained stove enhances your cooking experience and ensures your culinary creations are nothing short of spectacular. So, skip the dishwasher and give your cast iron stove grates the care they deserve to enjoy exceptional cooking for years to come.

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