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.
Quick answer
Coffee stains in marble are tannins that have soaked into the stone. Blot, wash with pH-neutral soap, then draw the stain out with a hydrogen peroxide poultice covered with plastic for 24 to 48 hours. Coffee is acidic too, so if a pale, dull ring remains once the brown has gone, that part is an etch and needs polishing, not more poulticing.
First, check what you are dealing with
- Brown or tan ring, surface still smooth: a stain. Follow the steps below.
- Pale, dull or slightly rough ring: an etch from the coffee's acidity. See fixing etching below.
- Both: remove the stain first, then deal with any dull mark.
What you need
- Paper towel
- pH-neutral dish liquid
- Hydrogen peroxide
- Flour, talc or diatomaceous earth
- Plastic wrap and tape
- Plastic scraper
- Gloves
Step by step
Blot, do not wipe
Soak up any liquid with paper towel straight away. Wiping spreads it across a bigger area.
Wash the area
Clean with warm water and a few drops of pH-neutral dish liquid, rinse and dry with a soft cloth so you can see what is left on the marble.
Test first
Try the mixture on a hidden spot of your marble (inside a cut-out or under an overhang) and check the finish after it dries.
Mix the poultice
Stir an absorbent powder (plain flour, talc, diatomaceous earth or whiting) into 3% hydrogen peroxide from a pharmacy (test it on a hidden spot first, as peroxide can lighten darker stone) until it has the consistency of peanut butter.
Apply it
Spread it 5 to 6 mm thick over the coffee ring, extending about a centimetre past the edge.
Cover and wait
Cover with plastic wrap, tape the edges and poke a few small holes so it dries slowly. Leave it 24 to 48 hours until completely dry: the drying is what pulls the stain up into the powder.
Remove and rinse
Lift the dry poultice with a plastic scraper, rinse with clean water and dry the marble. If the coffee ring is lighter but still there, repeat up to three times.
Dark stone: On dark marbles such as Nero Marquina and Emperador, keep to 3% hydrogen peroxide and test first, because stronger peroxide can lighten the stone.
What not to use on marble
- Vinegar, lemon juice or "natural" citrus cleaners: they etch marble.
- Scourers, steel wool and abrasive creams on a polished surface.
- Mixing cleaning chemicals, especially bleach with anything else.
- Bleach: it rarely lifts tannin stains from stone and can damage the finish.
When to call a professional
Call a stone restorer if the stain survives three poultices, covers a large area, or has left a dull etch ring you cannot polish out. A stone restorer can hone and re-polish marble back to an even finish, and on bookmatched or heavily veined slabs that is the safest route.
Understanding coffee stains on marble
Marble is moderately porous. A polished, sealed slab slows liquids down, but anything left for a few minutes can still work its way into the surface, and white marbles show every mark.
Marble is almost pure calcite, which dissolves in acid. Lemon, wine, vinegar and many sprays dull a polished surface within seconds to minutes.
A stone restorer can hone and re-polish marble back to an even finish, and on bookmatched or heavily veined slabs that is the safest route.
Good to know
On white marble such as Calacatta and Carrara, coffee usually leaves two marks at once: a brown tannin ring and a faint dull ring inside it where the acid in the coffee has etched the polish.
Stop it happening again
Whether yours is Calacatta, Carrara, Statuario, Nero Marquina, Emperador and Crema Marfil, repairing it fixes today's mark; protecting it stops the next one. Our clear Stone Protection Film sits over the surface, so acids cannot etch it and liquids cannot soak in. Choose Gloss for polished marble or Matte/Satin for honed and matte finishes. The protection is identical. It is installed across Sydney with a 10-year written warranty.
How we protect marble · Stain removal guide · Coffee stains on every surface