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Q. We have a stain on our granite top caused by a bag of peaches. The bag leaked and caused a stain in the granite. What do we use to make a mix to remove the stain?  A. The discoloration on your granite may be a stain, or it may be an etch. The... Read More

Q. I recently washed the mirrors about the marble or granite tiles with vinegar. Now there are spots on the tiles. Is there a way to remove these? It feels a little rough on the top of the spots as if the coating came off a bit. What can I do? A.... Read More

Q. What is the best cleaner to use on limestone floors? The floors in my bathroom are starting to look very dirty, with grayish marks and spots all over. A. It sounds like your floors have been etched -- probably by using an acid based cleaner. Many... Read More

Q. We had travertine tile installed 1 1/2 years ago and I had a hole open up and it is gradually getting bigger and now a 2nd hole has opened up too. Don't know what has caused it? Need to know how to fix it? We had it sealed when it was done...... Read More

Q. Is granite sensitive to acids? A. Unlike marble, granite is not a calcite based stone and is not generally vulnerable to acids. However, some stones, even though they are marketed as granite, may in fact have calcium in their makeup. Furthermore,... 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

Q. I cleaned soap scum off a stone tile shower with vinegar and it made white marks and streaks all over the shower walls. I can remove the sealer with cleaner but the white marks are still there. How do I fix it? A. If your shower is marble or... Read More

Q. How do I care for my newly installed floors?   A. The best thing to have done to a brand-new polished stone floor is a detailing job by a properly trained janitor, or a professional stone refinisher. Detailing means deep-cleaning every square... Read More

Q. My honed black granite looks streaky, (from sealer application). How do I remove the sealer or do I need to re-sand the stone? A. You may have to call in a stone restoration professional on this. But first try this: Pour some acetone (the kind you... Read More