Will my steel fire pit rust and how do I prevent it?
Bare or mild steel will rust outdoors — moisture plus iron equals oxidation, and our humid mountain summers speed it along. Prevention is about the finish: powder-coated steel, stainless steel, or Corten (weathering steel) resist it, and keeping the pit covered and drained does the rest. The burner and hardware should be stainless regardless, so the parts that matter most don't corrode.
Why steel rusts and when it's a problem
Steel rusts because iron reacts with water and oxygen — no way around the chemistry. Outdoors in WNC, between summer humidity, afternoon storms, and winter freeze-thaw, an unprotected steel fire pit will start showing orange within a season. Whether that's a problem depends on the finish and the part. Surface rust on a thick decorative shell is mostly cosmetic; rust in the burner, ports, or gas fittings is not — that's where corrosion turns into misfires, uneven flame, and eventually a part that has to be replaced. So the goal isn't steel that never oxidizes, it's the right finish in the right places.
The finishes that hold up
Three approaches work. Powder-coating seals the steel under a baked-on finish — durable and available in colors, though a deep chip can let rust start underneath, so touch-ups matter. Stainless steel resists corrosion in the metal itself, which is why quality burners and hardware are stainless and why it's the safe call for anything near the flame. Corten, or weathering steel, is the clever one: it's designed to rust to a stable, tight surface patina that then protects the steel beneath — that rusted look is the feature, and it's popular on modern Asheville patios. Whatever the shell is, insist the burner and gas components are stainless.
Keeping rust from taking hold
Maintenance is straightforward. Keep the pit covered when it's idle so it isn't marinating in rain and snow, make sure it drains rather than holding water in the pan, and wipe it dry after a soaking storm if you can. Touch up powder-coat chips before they spread. And give the burner a look each season — clear ports, dry hardware, no corrosion starting where it counts. If your steel pit is already rusting at the burner and lighting poorly, don't wait it out; that's a serviceable problem. Call (828) 545-0525.
Related questions
- What fire pit materials hold up best outdoors — aluminum, steel, concrete, or stone?
- Should my fire pit burner be stainless steel or brass?
- Do concrete or GFRC fire tables crack outdoors?
- Can a gas fire pit stay outside uncovered all year?
- How do I clean and maintain a gas fire pit?
- How much does it cost to install a gas fire pit?
Still deciding? Talk to a real installer.
Free assessments across Western North Carolina — no pressure, straight answers.