Q. Wax from a citronella candle spilled onto my outdoor natural stone bench. Please advise on a remedy to remove this. A. Candle wax can present a few issues. The candle wax that has melted onto the surface and into the pores of the stone and will... Read More

Q. I have a natural stone floor in a house I was renting. I was attempting to clean the grout and I bought a grout cleaner. I used it and now it looks like it has lightened (almost bleached to a degree) the stone where it touched it. I looked on the... Read More

Applying an Impregnator to a Wall or Vertical Surface It can be challenging to apply an impregnator to a natural stone wall or vertical surface, because gravity causes the product to drip and dribble before it has time to be absorbed. It is no... 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

Q. When we had our new slate hearth put in a few years ago we also had our living room plastered the following day. The plasterer did not put any protective dust sheets down which resulted in our beautiful new hearth being stained with plaster... 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. The house was built in 1975, the entry and hall is the multi-color stone/slate typical of the 1970's There are faded red, dark gray, green-gray and light gray random shapes all with 90 degree corners. Can this floor be changed to a single... Read More

  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

Fred M. Hueston, PhD Sitting in my office one morning I received a call from a very upset home builder. He told me he was building a two million-dollar home on the west coast of Florida. They had installed nearly 3500 square feet of a white statuario... Read More

Q. Can you please provide some definition of Sealer for Stone?A. Excellent question! For starters, when referring to stone, the word sealer is wrong. Well, technically it is not, but the reason that it is wrong is because sealers for stone are... Read More