Stone care & repair
Rust stains: how to fix them on every surface
Rust rings come from cans, bobby pins, razors, pot-plant bases and iron in water, and in some granites from iron minerals inside the stone. The catch is that most household rust removers are acidic, which is fine on porcelain and a disaster on marble.
Before you try anything: always speak to a professional before cleaning, treating or applying any product to your stone. Every slab is different, and the wrong product can cause permanent damage. Contact us or a qualified stone restorer first.
Choose your surface
Every surface compared
| Surface | What is different on this surface | Difficulty | |
|---|---|---|---|
| Marble | Rust on marble usually comes from cans, bobby pins, metal pot plant bases or iron in the water. Never use an acidic rust remover on marble; it removes the rust and etches the stone. | Moderate | Read fix |
| Travertine | Rust rings are common on travertine vanities and bathroom benches, from cans and razors left on damp stone. | Moderate | Read fix |
| Limestone | Limestone absorbs rust quickly on wet surfaces. Act while the ring is still orange rather than brown for the best chance of full removal. | Moderate | Read fix |
| Dolomite | Dolomite is acid-sensitive like marble, so choose a rust poultice labelled safe for marble, not a general rust remover. | Moderate | Read fix |
| Granite | Some granites contain iron-bearing minerals that can rust from within, leaving orange spots that were never caused by a can or tin. Those are part of the stone and may only partly lift. | Moderate | Read fix |
| Quartzite | Some quartzites contain iron that oxidises from within, giving natural orange tones. Rust rings from metal objects are separate and usually removable. | Moderate | Read fix |
| Quartz | Rust rarely does more than sit on the surface of quartz, most often from shaving cans or tins left beside the sink. | Easy | Read fix |
| Porcelain | Porcelain is one of the easiest surfaces to clear of rust, because acidic rust removers cannot harm it. | Easy | Read fix |
| Terrazzo | In cement terrazzo, both the binder and any marble chips can be etched by acidic rust removers, so use a stone-safe product. | Moderate | Read fix |
| Concrete | Rust on concrete benchtops often comes from metal pot-plant bases or tins. Acidic rust removers will etch the concrete as well as lift the rust. | Moderate | Read fix |
Rules that apply to every surface
- Act fast. The sooner you blot or wipe, the less there is to fix.
- Test first. Try any method on a hidden spot and check once it is dry.
- No acids on calcite. Vinegar, lemon and most descalers etch marble, travertine, limestone and onyx.
- Protect after repair. A clear film stops the same mark happening again.
Frequently asked questions
Porous and acid-sensitive stones such as marble, travertine, limestone, dolomite need the most care. Non-porous surfaces like porcelain and quartz are usually the easiest.
Always. Try any chemical or poultice on a hidden spot, such as inside a sink cut-out or under an overhang, and check the finish once dry.
A clear protection film over the surface keeps spills and acids off the stone. Stone Film Sydney installs it across Sydney with a 10-year warranty.
Stop fixing. Start protecting.
Clear anti-etch, anti-stain film for every stone in Sydney. Free, no-obligation quote, on site or over the phone.