If you own a Corten steel grill, you already know it’s more than just a grill — it’s a statement piece for your outdoor living space. Known for its distinctive rusted finish and exceptional durability, a Corten (or weathering steel) barbecue can last for decades with proper care.

But while it’s built to withstand the elements, some simple maintenance steps will help keep your Corten steel BBQ looking beautiful and performing perfectly year after year. Let’s explore how to maintain and protect it the right way.

1. Understand the Natural Aging Process of Your Corten Steel Grill

Corten steel is designed to form a protective oxide layer (the rust-like patina) when exposed to weather. This patina prevents deeper corrosion and makes the steel nearly maintenance-free.

However, it’s important to know that the patina develops over time — usually within 6 to 12 months. During this period, you may notice slight color changes or rust runoff. This is completely normal and part of the natural weathering process.

Tip: Avoid placing your BBQ directly on light-colored tiles or concrete during the first few months to prevent temporary staining from runoff.

2. Clean Your Corten Steel Grill After Every Use

Just like any outdoor grill, cleaning your Corten steel grill after each cooking session will extend its lifespan and maintain its elegant look.

Here’s how to clean it properly:

• Let the BBQ cool completely before cleaning.
• Remove food debris and ashes from the fire bowl.
• Wipe surfaces with a soft brush or dry cloth — avoid harsh chemicals or metal scrapers.
• For the cooking plate or grill grate, use mild soap and warm water, then dry thoroughly to prevent unwanted oxidation.

Avoid: Covering the BBQ while it’s still wet or hot. Moisture trapped under a cover can interfere with natural patina formation.

3. Let Your Corten Steel Grill Weather Naturally

One of the biggest advantages of Corten steel is that it doesn’t need to be painted or sealed.
The material’s self-protecting surface regenerates naturally over time. Applying paint, oil, or sealant can actually block the weathering process and cause uneven color patches.

If you prefer to control the patina appearance, you can use a Corten accelerator spray, but it’s not necessary for performance or protection.

4. Handle Moisture and Drainage Properly

Although Corten steel is designed for outdoor use, proper drainage helps keep it in top shape.

Maintenance tips for rainy climates:

• Ensure drain holes in your BBQ or fire pit are clear so water doesn’t pool.
• If heavy rain is expected, tilt or slightly elevate the BBQ to promote runoff.
• Avoid covering it with plastic — use a breathable outdoor cover if needed.

When stored outdoors year-round, your BBQ will continue developing a richer, deeper patina that strengthens its resistance to corrosion.

5. Inspect and Maintain Functional Parts

While the Corten steel body requires little attention, some components — like cooking grates, hinges, or bolts — may need occasional care.

• Check for grease buildup and clean moving parts regularly.
• For stainless or cast-iron grill plates, apply a thin coat of cooking oil to prevent rust.
• If you have a modular outdoor kitchen, ensure all joints and mounts remain tight and level.

6. Embrace the Patina — It’s Part of the Charm

The warm, rustic tones of Corten steel are what make these BBQs so unique. Over time, your grill will develop a custom color palette depending on your local climate — from deep orange to dark brown hues.

Every piece becomes one-of-a-kind, telling the story of your outdoor lifestyle. Don’t try to stop the aging process — embrace it as part of the natural beauty of weathering steel.

Long-Lasting Beauty with Minimal Effort

Corten steel BBQs are built to last and require very little maintenance. By following these simple steps — cleaning after use, ensuring good drainage, and allowing natural oxidation — you’ll enjoy decades of reliable performance and unmatched style.

Whether used for backyard gatherings, outdoor kitchens, or garden parties, your Corten steel grill will continue to impress with its timeless design and weatherproof durability.