Analysis by Valery Grin · · updated September 11, 2026
Weber Cast Iron Protector 17889, 200 ml fine-mist spray
200 ml spray, fine mist, tasteless and free of harmful substances per the listing
From€10
Price verified on Amazon on September 12, 2026 · may change
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- Material
- Protective spray, flavourless and free of harmful substances (Weber does not publish the composition)
Quick answer
Worth it? If you have cast iron on the kamado — grate, griddle, skillet or the top vent — yes: cheap upkeep against an orange, pitted part. Weber's listing promises a fine mist, no taste and no harmful substances; it publishes neither composition nor smoke point. It neither seasons on its own nor removes rust: clean, apply a whisper-thin coat, add heat. Neutral oil and kitchen paper get you close, just messier.
A kamado's ceramic holds moisture, and cast iron ends up sitting inside a closed, damp box for days. Weber's 200 ml spray exists for exactly that: a thin film over grate or griddle before you shut the lid.
Cast iron and kamados fall out over something counter-intuitive: the ceramic is a sealed box that holds moisture. You finish cooking, choke the vents to smother the coals, and the grate stays in there, warm and damp, until next weekend. On the coast, with salt in the air, the orange bloom turns up a good deal sooner than you would think.
What Weber sells here is a 200 ml protector with a fine mist which, per the manufacturer's own listing, is tasteless and free of harmful substances and is meant to keep grates and other cast-iron parts from rusting. The brand publishes neither the composition nor the smoke point, so treat it as what it is, maintenance rather than a factory seasoning, and expect no miracles from a single pass.
On a kamado the method barely differs from any charcoal grill, with one caveat: restricted airflow does not forgive excess. Clean, dry, still-warm iron, one short pass, then wipe the surplus off with kitchen paper; if a 200-250 °C roast follows, better still, because the heat sets the film. What you should not do is spray inside the dome, or wet the felt gasket.
Honest, tasteless upkeep for the cast iron that lives inside damp ceramic. It won't season on its own and won't lift rust: it's the coat you'd otherwise wipe on by hand.
Editorial rating from spec sheet, measurements and kamado fit · not a hands-on test
Pros
- Fine mist: covers a whole grate with very little product
- Tasteless and free of harmful substances, per Weber's listing
- Works on any cast iron: grate, griddle, skillet or casserole
- 200 ml bottle: fits the cart drawer and doesn't spill
- Cleaner and quicker than wiping oil on with a rag after every cook
Cons
- Doesn't remove existing rust: brush and degreaser come first
- Weber publishes neither the composition nor the smoke point
- Easy to overdo: the surplus drips onto the coals and smokes acrid
Who it's for
For anyone cooking on a cast-iron grate, griddle or skillet in a kamado, and above all for coastal cooks, where salt air turns a skipped wipe-down into rust.
Not for
If the part is already orange with rust, this won't lift it: brush and degrease first, because the protector only maintains iron that is still healthy.
Specifications
- Material
- Protective spray, flavourless and free of harmful substances (Weber does not publish the composition)
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Goes well with
Big Green Egg Cast Iron Cooking Grid Large (35 cm)
The Large's cast-iron grid is precisely the part that rusts inside the ceramic: it sears a better steak and asks for a coat of protector after every cook.
€109
Weber Grill Cleaner Biodegradable 300 ml
The right order is degrease first, protect second: this cleaner lifts the carbonised grease that would stop the protector's film from gripping the iron.
€11
Kamado Joe Half Moon Reversible Cast Iron Griddle (Classic)
The half-moon griddle is pure cast iron and half lives inside the kamado: without a coat of protector it turns orange in the first quiet week.
€70
FAQ
Will it remove rust my cast-iron grate already has?
No. The protector maintains healthy iron, it doesn't rescue sick iron. If the orange is already there, take a wire brush or scourer down to grey metal, degrease and dry completely. Only then does a thin misted coat, set with heat, make sense. Sprayed over rust, all you do is seal the corrosion underneath.
Do I need to heat the piece after applying it?
Weber doesn't publish a smoke point, so nobody should promise you a full seasoning from a spray. What does work: apply to clean, warm iron, wipe off the excess with paper, then use a 200-250 °C roasting session with the dome closed. That heat sets the film far better than leaving it to air-dry.
Can I spray it with the part still inside the kamado?
Better not. Take the part out, spray it outside, put it back. Inside ceramic the airflow is restricted: any surplus drips onto the coals, smokes acrid, and that smoke doesn't vent away — it sits in the dome and turns up in the next meal. Also keep it off the felt gasket and the inner ceramic.
How often should I reapply if I live by the sea?
The manufacturer gives no schedule. The practical rule on the Costa Blanca is to reapply after every long cook and before any break longer than a week: salt air and the moisture the ceramic retains keep working even when you don't light the kamado. Under a cover and sheltered, the iron lasts considerably longer.