Q. What can we do to clean marble lobby floors in our various commercial buildings? A. The yellowing and graying of certain Italian and Greek white marbles is a common problem that I see all over the world. There are several possible causes for... Read More

Q: We purchased and had some beautiful light tan/beige marble installed on our master bathroom floor, 42" glass enclosed (2 sides) shower walls and tub enclosure. After five years, where we attempted to keep the shower walls clean, there is a... Read More

There are two possible reasons the veins in your marble are changing color. First, white marble characteristically contains iron; it is possible the iron is oxidizing and turning to rust. If this is the case, it may be impossible to remove. Second,... Read More

Q. How do I clean a yellow marble figurine to make it white again? I have tried marble cleaner to no avail. A. Your DIY methods will differ depending on how the marble turned yellow. One possibility is that the stone absorbed some sort of staining... Read More

Q. My countertops were just installed and the tile guy left an ink pen on the island counter. It leaked and I now have a blue stain on my Calacatta marble slab. Any advice on how to remove it. I used acetone and alcohol. It did lighten up, but I can... Read More

Graffiti Removal Procedure for Stone, Masonry, and Tile Surfaces By Frederick M. Hueston, www.stoneforensics.com If your beautiful building, wall, or other surface has just become the unintended canvas for graffiti, your first reaction might be to... Read More

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

This is a very common problem on granite. Granite is a very porous stone, more porous than most marble. Because of its porous nature, granite has the ability to retain a great deal of moisture. The dark area in this case may simply be excessive... Read More

I personally recommend Grout Perfect (www.groutperfect.com) though there are many out there. It is a superior product, easy to use ,and has benefits that go beyond just looking pretty, such as constant acting mildewcides and more. Fred Hueston... Read More

That’s a difficult question, since it depends on the type of marble you have, how hard or soft it is, how much traffic the floor receives, and many other factors. On the average, most marble floors in a home need to be polished about once every... Read More