Q. We grouted our beautifully installed marble backsplash with a gray grout without sealing the marble first. Unfortunately, the marble—which was originally white has now turned grey. It seems the grout has discolored the surface. Is there... Read More

Q. I am a project manager for an insurance company. I have a project at a post office that has terrazzo floors. It looks like there are long cracks that I assume follow a stress crack in the concrete below. I need to give the customer an idea what it... Read More

Q. How and with what do I address a crack in a travertine table top? A. Many problems with natural stone can be resolved by homeowners. Other problems require the services of a stone restoration professional. Before you move forward with DIY repair... Read More

Q. We have a new Calcutta Matarazzo Dolomite kitchen honed bench top. Only in use since Xmas Day 2025. We are seeing shiny streaks across the surface. Do we need to request the stonemason to return and repolish the surface, or can you advise of... Read More

Q. My housekeeper put straight vinegar on my shiny black marble floor on the entry way only to my bedroom & bathroom. I have ordered an etch removal product. Is this all I need? What else will I need to do? Should I sand the etched area? A.... Read More

Q. I bought travertine tile, and when I got home I realized one side was polished and the other unfinished. I prefer the unfinished side. Is it possible for me to mud with the polished side down or will it not stick to the mud and pop up? Is there a... Read More

Q. I recently moved into a home built in 1980 that has travertine tiles in all of the common rooms of the house including the bathrooms. It is a beautiful stone, but I personally hate it. It is just too much beige, and I also feel it dates the home.... Read More

Q. Our bathroom countertops are dark grey Limestone. There is a 4 inch round white stain on the countertop beside the sink. I THINK IT IS TOOTHPASTE RESIDUE. We are listing our house for sale this week and the stain needs to disappear ASAP. A.... Read More

Q. Started a project of refinishing my kitchen table. I put polyurethane on the table top. I must have spilled some of the poly on my granite. It has hardened. How do I remove from my granite? Thank you! A. If the polyurethane spill is large, thick,... Read More

Q. Stain on white granite is plant food for flowers. Color of stain is blue. Have tried stone cleaner at least 3 time with no success. A. Blue stains from water-soluble fertilizer can be surprisingly stubborn on light granite. The color usually comes... Read More