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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 have mold buildup in grout joints and surface has film on it. What is best to clean mold and remove film from surface?   A. There are several cleaners that will remove the mold but you must be careful to choose one that will not damage the... Read More

Q. We had a new lueders limestone fireplace surround installed. There are darker stripes on each side of all grout lines. Installer said grout was not acrylic, but grout did have some colorant. Stone has dried now three weeks and stains still present... Read More

Q. How would I remove a WD40 stain from an unsealed limestone hearth? A.  To remove WD-40 from unsealed limestone, we recommend the poultice method of stain removal. Mix a good degreaser, which can be purchased at Home Depot or Lowe’s,... Read More

Q. Our limestone fountain is dyed on special occasions. The purple dye is penetrating the limestone at the bottom of the wall. How can the purple dye be removed from the limestone? I have tried acid and chlorine. Any suggestions?   A. Thank you... Read More

Q. I bought lagos azul limestone back in December and it is getting installed in sections. I would greatly appreciate it if you could help me. I am hoping you might know a solution or can refer me to someone. My kitchen contractor installed the tile... Read More

Q. Is there any harm in not having my limestone floor restored right away?A. If you are considering restoration, the cost would be a lot less to fix a small area rather than waiting until the entire floor is in need of work. Contact your... Read More

Q.  My son spilled apple juice on my new limestone floor and now there are marks. Can this be fixed? A.  Limestone is extremely sensitive to acids and most likely the dull spots are where the acids in the apple juice have now etched the stone.... Read More

Q. I have a Limestone tile and someone let the polish dry in the grout. How can I remove the polish from the grout? The grout was not sealed. The product was granquartz stone polish. A. Try applying a neutral cleaner to the grout where the polish... Read More

Q. I accidentally wiped my limestone fire surround on one side with a cloth that had WD-40. It has discolored  the limestone that is stone in color. The discolored area is a few shades darker. How can I bring it back to the lighter color it should... Read More