Recommended Solution: Silmarb
Marble Etching: To prevent etching, avoid using cleaners and chemicals that contain acids. Bathroom cleaners, toilet bowl cleaners, and lemon cleaners commonly contain acids. Certain drinks and foods contain acids and will also etch. Light etching can be removed with a little marble polishing powder. Deep etching will require resurfacing of the stone.
Marble Staining: All stone surfaces can become stained very easily. Most foods, drinks, ink, oil and rust will stain marble. Once a stone becomes stained, it can be very difficult to remove. To prevent staining, clean the spilled material immediately. Blot the spill with a clean paper towel or cloth. If this does not remove the stain, then a process called "politicking" may be needed. For more information on politicking, please refer to our brochure "Removing stains from Marble, Stone and Other Porous Surfaces". To prevent staining, sealing the stone with a good quality penetrating sealer is important.
Efflorescence: Efflorescence appears as a white powdery residue on the surface of the stone. It is a common condition on new stone installations or when the stone is exposed to a large quantity of water, such as flooding. This powder is a mineral salt, from the setting bed. To remove efflorescence, do not use water. Buff the stone with a clean polishing pad or #0000 steel wool pad. The stone will continue to effloresce until it is completely dry. This drying process can take several days to as long as one year.
Yellowing: There are several reasons why a stone will turn yellow. Embedded dirt and grime can give the stone a yellow, dingy look. Waxes and other coatings can yellow with age. Certain stones will naturally yellow with age. This is caused by oxidation of iron within the and especially problematic with white marbles. If the yellowing is caused by dirt or buildup, clean the stone with an alkaline cleaner or wax stripper. If the yellowing is result of aged stone or oxidation, live with it. It is not coming out.