Acid Stains on Polished Marble: Why They Happen and How to Fix Them
Quick answer: Fila's Marble Rescue Kit repairs small areas of marble, travertine, limestone, or marble-cement terrazzo with a glossy polished finish that have been damaged by acidic substances (vinegar, lemon, soft drinks, unsuitable cleaning products). Vinegar and lemon juice dissolve the calcium carbonate in marble on contact, leaving a matte, dull mark where there used to be shine: that's an acid etch, not a surface stain that wipes off with a cloth.
Why marble gets "burned" by lemon or vinegar
Marble is calcium carbonate, and acids react with it, dissolving the polished surface at a microscopic level. The result is a typically round, matte mark that won't come off with any cleaner because it isn't dirt: it's the stone itself that has lost its polish at that spot.
What the Marble Rescue Kit does
Restores the shine to the area damaged by the acid, blending it in with the rest of the polished surface.
Effective on marble, travertine, limestone, and marble-cement terrazzo with a polished finish.
Estimated coverage: up to 30 acid etch marks of about 6-7 cm in diameter across 1.5 m² of surface.
Designed for bathroom and kitchen countertops, tables, steps, and windowsills.
When to use it, and when not to
Yes: isolated matte circles where vinegar, lemon, an acidic soft drink, or an unsuitable cleaning product has been spilled on polished marble.
Not the solution: deep scratches, chips, or widespread wear across the whole surface; in those cases, a full professional polish is needed.
How to prevent new acid marks
Once the shine has been restored, it's worth protecting the surface so it doesn't happen again: CLASSIC maintains the shine of polished marble, and a suitable daily cleaner like Clean&Shine or Marble Refresh avoids the use of acidic products that could damage it again.
Frequently asked questions
Does the kit work on matte-finish marble, or only on glossy polished marble?
It's specifically designed for a glossy polished finish, where acid damage is most visible due to the contrast.
Why isn't a regular cleaner enough to remove the lemon mark?
Because it isn't a surface stain: the acid has dissolved the stone's polish at that spot. No cleaner can restore that shine; you need a product that repolishes the surface.
How many marks can I fix with one kit?
As a general guide, up to about 30 small acid etch marks (6-7 cm) spread across 1.5 m².
