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The yellowing and graying of certain Italian and Greek white marbles is a common problem that I see all over the country. There are several possible causes for this condition: Maintenance technique-Take a close look at your maintenance program. Are... Read More

Smoke stains can be difficult to remove, and may require the use of a poultice. There are several gel-type cleaners that will remove smoke stains; ask your stone supplier for a recommendation. The gel cleaners are brushed onto the surface and allowed... Read More

The mildew on you grout has penetrated deeply. To remove it, you will have to prepare a mixture of bleach and an abrasive cleaner like Soft Scrub. Apply the thick mixture to the grout with a paint brush and allow it to set overnight. Rinse the thick... Read More

The water spots are, of course, literally caused by the hard water. There are several silicone waxes that can be applied to the tile to help prevent them from forming. A vinegarand-water mixture works well for removing these spots. TIP If this... Read More

Since the acid has etched the marble, the etching will require honing and polishing to remove. Call in a professional stone specialist, since this work can be quite difficult. TIP Etch marks caused by acid bathroom cleaner can penetrate very deep in... Read More

There are several techniques that can be used to bring it back, but first it is necessary to determine why the floor has faded. If the fading is due to excessive wear from foot traffic, resurfacing and polishing should return the color. If the fading... Read More

Wax build-up on a vertical surface can be difficult to remove, since most strippers will run. Janitorial supply stores do offer spray-on baseboard wax removers that work very well; since they are applied as a foam, they will cling to vertical... Read More

Removal of rust on terrazzo will typically require both a powder poultice and a commercially available rust remover. Iron-Out mixed with a plain poultice powder works well. You may also want to try using the Iron-Out alone, mixing it into a paste and... Read More

Q. Can Corian™ and cultured marble be treated like real marble? A. The daily care and cleaning of Corian™ and cultured marble are similar to that of natural marble, but professional repair and restoration methods are different. If your customer... Read More

Many brands of grout sealer are available for this purpose; most are easy to apply, but make sure the grout is first cleaned thoroughly. Grout sealers are available at most hardware and home supply centers. TIP Most of the silicone impregnators sold... Read More