Will acid damage Giallo Siena marble?
Yes, and permanently.
Answer
How do you remove an oil stain from Giallo Siena marble?
Keeping the surface
With a poultice that draws the oil out, not with a solvent and not with more pressure. Anything unknown goes to a specialist. The rule on this stone is that a mark in the stone is a different problem from a mark on the stone.
The figures
| Stain | Treatment | Source |
|---|---|---|
| Oil | A poultice is the usual answer | Published maintenance practice |
| Plant matter | A poultice | Published maintenance practice |
| Anything unknown | A specialist | Published maintenance practice |
| Never | Acidic cleaners, scouring powders, bleach on a polished face | Published maintenance practice |
Why this stone behaves this way
Oil sits in the pore structure rather than on it, so it has to be drawn out. A poultice does that by absorption and it does it without opening the surface, which is why it is the first answer rather than the last.
What these figures are, and what they are not The treatment depends entirely on what the stain is. This page states the general rule; it is not a cleaning manual for a specific spill.
Where these figures come from
- S15 mggroupin.com — marble maintenance practice (sealing cycle, etching prevention)
Where to go next
On the same subject
More questions about Giallo Siena marble
How do you clean Giallo Siena marble?
With a soft cloth or a non-abrasive mop and a cleaner made for marble, neutral in pH.
This answer sits on the Keeping the surface page, with the rest of the questions about it.
Care and maintenanceAsk for a price
A thickness, a format, a finish, a quantity and a destination will get you a quotation for Giallo Siena marble.
How do you remove an oil stain from Giallo Siena marble?