Marble Etching and Staining
Marble is a natural stone with a soft, porous surface susceptible to stains and etching. Some liquids wipe up easily, but others leave a stain and fade over time. Many common substances can stain marble, including:
Marble stains because it absorbs the substance and draws it into pores beneath the surface creating a dark spot (although the finish is not affected). Stains in marble are usually not permanent but marble stains do need to be removed carefully.
What is Marble Etching?
Marble is primarily calcium carbonate, a substance which reacts to any type of acid. Acids eat away at the surface and create dull spots called etches. Etching is small-scale erosion and can often only be seen in certain light.
Acids like lemon juice, tomato sauce, vinegar, coffee, tea, soda and alcohol can etch marble countertops. Many homeowners who choose marble for the kitchen believe etching and staining add personality to the marble, in essence recording the story of their life.
Etching tends to be less visible on honed marble than polished marble. While a honed marble kitchen island or dining room table may become lightly marked from spills and scratches, the same marks will be much more obvious on polished marble.
Marble used for floors, bathrooms and backsplashes is less likely to stain and etch due to less contact with food and drink. With proper polishing or sealing, marble’s resistance to marking increases significantly.
Contact our Milwaukee area marble experts for more help choosing the right stone material for you and your home.