Real iron, rusted on purpose. Porter's Liquid Iron puts genuine metal on your wall, then we develop a warm, corten-style rust patina by hand — and seal it exactly where you want it.
Master PaintersPorter's Liquid Iron suspends genuine iron particles in a coating that's applied like a fine render. Once it's on the wall, we apply an activator and the iron does what iron does — it rusts. Real oxidation, real chemistry, real texture.
The difference is control. A trained applicator develops the rust deliberately — warm corten oranges, deep earthy browns, subtle mottling or full drama — then seals the surface to stop the reaction at exactly the patina you approved. The look of ten years of weathering, delivered in days, and locked in place.
Because every wall oxidises slightly differently, no two Liquid Iron walls are the same — yours is one of one. Compare it with our other decorative finishes, or get a free instant estimate for your wall.
The industrial statement — architectural, warm and impossible to ignore.
The corten look architects specify — on Gib, plaster or render, without a single sheet of steel.
Rust and fire belong together — an oxidised chimney breast makes the hearth the soul of the room.
Entry walls, pillars and courtyard features with genuine weathered-steel presence, sealed for the elements.
Moody, warm, low-light spaces where the rust tones glow — the wall people photograph.
Restaurants, breweries, barbershops and fit-outs that want industrial character with commercial durability.
Rust against oak, ply or raw concrete is the modern NZ material palette — we'll help you compose it.
Love the weathered-steel look? Here's why the finish usually beats the fabrication.
| Liquid Iron (Porter's) | Corten Steel Cladding | |
|---|---|---|
| What it is | Real iron in a coating, rusted and sealed on your existing wall | Steel sheets fabricated, installed and left to weather |
| Cost & work | A painting-trade job — no fabrication, no structural work | Steel supply, fabrication and installation costs |
| Weight | Effectively none — it's a coating | Heavy — walls may need engineering |
| Rust control | Developed by hand, stopped and sealed at the exact patina you approve | Weathers on its own timeline — years, not days |
| Run-off & staining | Sealed — no rust bleed onto paths or decks | Notorious for staining concrete below |
| Where it can go | Interior & exterior, curved walls, fireplaces, existing surfaces | Wherever sheets can be fixed |
Short version: if you want weathered steel's soul without its logistics, Liquid Iron is how we deliver it. Book a free consult and we'll rust up real samples for your wall.
We look at your wall and light, then develop real rust samples — subtle to dramatic — so you approve the exact patina first.
Free · No obligationPrimed and prepared for the substrate so the iron coating bonds evenly — even oxidation starts with even prep.
The iron-loaded coating goes on in layers, then the rust is activated and developed by hand — watched, timed and shaped.
The reaction is stopped at your approved patina and sealed to lock it in — no further rusting, no bleed, no maintenance drama.
Real iron and a hand-developed patina are priced by the wall, the process and the prep — not a flat rate. Most projects are a single feature wall, and next to corten fabrication it's the bargain of the industrial look.
Tell us the room or wall, pick the finish, get your indicative number in about a minute.
Try the free estimator → Or book a free consult No obligation · No spam · Just a clear next stepIron rust is the rawest of our metal finishes — here's where it sits next to the rest of the range.
Iron's brighter siblings — copper verdigris and deep liquid gold, same real-metal craft.
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Natural stone texture in Fine and Coarse grades — the mineral answer to iron's industrial edge.
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Burnished, stone-like depth — the refined statement to rust's raw one.
Explore polished plaster →Auckland homeowners, designers and architects trust Key Painting for iron rust finishes done properly. Start with a free consult — or get your number in 60 seconds.