When grates need replacing vs. cleaning
A lot of grates that look finished just need a proper cleaning. Heavy, blackened carbon buildup on stainless grates usually comes off. Surface rust on cast iron can often be scrubbed and reseasoned. What can't be fixed: grates that have rusted thin, bars that are cracked or broken, porcelain coating that's flaking off in chips, and grates warped so badly they rock or don't sit flat.
Flaking porcelain and badly rusted grates are a food safety concern, not just a looks problem. Chips and rust flakes stick to food.
Grate materials at a glance
| Material | Strengths | Common failure |
|---|---|---|
| Heavy stainless rod | Durable, low maintenance, standard on premium built-ins | Warping from extreme heat, discoloration |
| Stainless stamped or thin rod | Light, affordable | Sagging, thinning, pitting near the coast |
| Cast iron | Excellent heat retention and searing | Rust if not kept seasoned and dry |
| Porcelain-coated cast iron | Good heat retention with less seasoning | Coating chips, then rusts underneath |
| Porcelain-coated steel | Inexpensive | Chipping, rusting through |
Why grates fail
Most common first.
Moisture and neglect
Cast iron left wet or uncovered rusts quickly. Grease buildup traps moisture against any material.
Salt air
Near the ocean, even stainless grates pit and discolor faster.
Learn moreWire brush damage
Aggressive brushing chips porcelain coatings and can leave wire bristles behind.
Heat damage
Grates over sear or infrared burners, or grills run very hot for long stretches, can warp.
Grease fires
A serious grease fire can warp grates and strip seasoning or coatings.
Learn moreWhat you can safely do
- Heat the grill on high for 10 to 15 minutes and brush the grates while hot, using a bristle-free brush or scraper if you're worried about wire bristles.
- Keep cast iron grates lightly oiled after cooking, and dry them out with heat if they get wet.
- Check grates for loose wire bristles after brushing. Swallowed bristles are a real hazard.
- Measure your grates (depth, width, and number of pieces) or find your model number before ordering replacements.
- Lay a grate on a flat surface to check for warping.
What we do
On a cleaning visit, grates get degreased and scrubbed back to bare metal where possible. If they're past saving, we'll show you and quote replacements. We order OEM grates for most premium brands, including Lynx, Viking, DCS and Weber, and can source heavy stainless upgrades for some grills that came with cast iron or porcelain. If you're thinking about switching materials, read cast iron vs. stainless grates first.
When we install new grates, we check the heat plates and burners underneath, since grates usually wear out alongside them.
How grate replacement works
- 1
Assess
We look at the grates and decide whether cleaning will bring them back or they need replacing.
- 2
Match
We match by model number, or by measuring and photographing the grates and ledges.
- 3
Install
New grates are fitted and checked for a flat, stable fit.
- 4
Prep and advise
Cast iron gets an initial seasoning. We'll tell you how to care for them so they last.
Grate questions
Are rusty grates safe to cook on?
Light surface rust on cast iron can be cleaned off and reseasoned. Grates with flaking rust or chipping porcelain should be replaced, since flakes end up on food.
Is stainless better than cast iron?
Stainless is lower maintenance and holds up better outdoors. Cast iron sears beautifully but needs more care. Our grates guide goes into the details.
Can you get grates for an older grill?
Often, yes. Many grates are still made, and custom-cut stainless grates are an option for some discontinued models.
Why are my stainless grates turning brown or blue?
Heat discoloration is normal on stainless and doesn't affect cooking. It doesn't mean the grates are failing.
How much do replacement grates cost?
It depends on the brand, size and material. Send us your model number or measurements and we'll quote it.
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Grates past saving?
Call or text us, or send a photo of the grates and your model tag. We'll tell you whether they'll clean up or need replacing.