Stain file № 1223 · Food · Hard surfaces
How to get grease out of marble
Draw out the oil; poultice the oil out. Never vinegar or lemon. Stubborn on marble if you act quickly.
- Editorial difficulty
- Stubborn
- Estimated hands-on
- 14 min + 32 h waiting
- It sets
- once it is washed and dried
- Kit
- 3 items + 2 tools
01 The short answer
To get grease out of marble, work in this order: (1) draw out the oil; (2) poultice the oil out. The key measure: baking-soda poultice, 24–48 h. Rinse with clean water, dry with a soft cloth, and look at the spot from an angle.
This may be difficult to remove. Repeated treatment can damage the item; a persistent mark is a reason to consult a professional.
02 Never do this
- Vinegar, lemon or acidic cleaners. They dissolve calcium carbonate and etch dull marks into marble.
03 Before you start
- Use white cloths or paper towels only: coloured ones can transfer their own dye into marble.
- Identify the stone and finish. Water absorption does not by itself establish sealer failure or a need to reseal; ask the stone or sealer supplier.
- Pretest every permitted treatment on an inconspicuous area, including trims, and let it dry. Stop for colour transfer, lightening, rings, stiffness or distortion. A successful spot test does not guarantee the whole item is safe.
- The listed products are not permission to combine treatments. Use each only if the exact item and product labels permit it, including any change of product. Rinsing or blotting does not establish compatibility; ask the manufacturers or a professional if unsure.
04 The method
Draw out the oil
Cover the stain completely with cornstarch (or baking soda or talc) and leave it for several hours, ideally overnight. Brush or vacuum it off, and repeat while the powder still comes up darker.
Why it works: Fine powder pulls fresh oil out of the marble by capillary action, like a wick. It is the gentlest way to remove the bulk of the oil.
2 min hands-on · 8 h waiting
Poultice the oil out
Wash the surface with a few drops of dish soap in warm water first. If a dark patch remains, it has soaked in: mix baking soda with water into a paste like peanut butter, spread it 6 mm (¼ in) thick over the stain, cover with plastic wrap, tape the edges, poke a few holes, and leave it 24–48 hours. Scrape off with plastic, rinse and dry.
Why it works: A poultice draws oil out of porous stone as it dries, the only way to reach a stain that is inside the stone.
10 min hands-on · 24 h waiting
Rinse, dry, check
Rinse with clean water, dry with a soft cloth, and look at the spot from an angle. A dull patch is etching, which needs marble polishing powder, not more cleaning. Ask the stone supplier whether sealing is needed; a quick water-darkening test does not establish sealer failure.
Why it works: Sealed stone resists the next spill; a dull patch tells you the polish needs attention.
2 min hands-on
05 Dried, set, or back again?
- Old oil has partly oxidised and gone sticky; apply the degreasing step two or three times, and give powder an overnight stay where it is used.
- A stain that has been in stone for weeks needs a poultice, sometimes two or three applications 24–48 hours each.
Assess the mark only once the item has dried according to its care instructions. If it remains, do not keep repeating or strengthening treatment; obtain advice for the exact material and product.
06 What grease is made of
- Oil and fat
The oily part of grease will not dissolve in water at all. It needs a surfactant such as dish soap, or a solvent, to break it up, and a dry powder can draw fresh oil out before you start.
- Grease stains look like dark wet patches that never dry because oil fills the gaps between fibres and lets more light through. They add no colour, only translucency.
- Dish soap molecules have one water-loving end and one oil-loving end. They surround each oil droplet so water can carry it away.
- An oil stain can be invisible on wet fabric and reappear once dry; check before the dryer, because heat locks it in.
07 The material: marble
It tolerates hot water (up to about 60 °C (140 °F)) for the final wash, but only after any protein has been rinsed out cold.
- Marble is calcium carbonate, which acids dissolve: lemon, vinegar, wine, tomato and many bathroom cleaners leave dull etch marks.
- An etch is damage to the surface, not a stain: it looks dull or whitish and no stain remover will fix it. A stain is darker and sits inside the stone.
The marble file rates every common cleaner for it.
08 Next time
Wear an apron when frying, keep a box of cornstarch near the stove, and treat oil marks before the first wash: dryers lock grease in.
09 Questions
Can I use hot water on grease on marble?
Warm water helps here once the first steps are done; stay within the care label (up to 60 °C (140 °F)) and check the stain has gone before any dryer.
Does vinegar help with grease on marble?
Keep vinegar away from marble. Acid dissolves calcium carbonate, so vinegar etches dull spots into marble, limestone and travertine.
Can I use bleach on grease?
Not chlorine bleach on marble: it can dull and discolour polished marble, and it does nothing for most stains in stone. The exception is mildew on stone, where stone-care guides use a weak solution (about ½ cup per gallon of water) and rinse it off.
Will grease come out of marble completely?
This may be difficult to remove. Repeated treatment can damage the item; a persistent mark is a reason to consult a professional.
When should I call a professional?
Etching larger than a coin, honed (matte) marble you want polished, and rust stains.