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- What can we do to clean marble lobby floors in our various commercial buildings? 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 th... Read More
- Stone Myths Stone Myths By Frederick M. Hueston www.stoneforensics.com Over the past 20years I have heard many stories about the reasons stone will fail, turn color, fade or what ever. Many of these stories are funny and almost all of them are just plain fals... Read More
- After a leak, how long will it take for darkened marble tiles to lighten up? Q. We had mosaic marble tiles installed in our bathroom about a month ago and recently noticed the tiles about 12 inches around the toilet were a darker gray color than the rest of the floor due to a leak in the wax seal when the toilet was replaced... Read More
- How do I remove grout stains from ceramic tiles? Q. How do I remove grout stains from ceramic tiles? Grey grout has penetrated and stained some of my ceramic wall tiles. Is it possible to draw this out? The stain is from grey grout. The tiles were sealed, but unfortunately one pack had not been s... Read More
- How to Remove Bleach-Based Discolorations on Travertine Q. The travertine in my shower was cleaned with a bleach-based cleaning product, causing a stain. Will my travertine need to be replaced? A. Bleach should not cause a stain on travertine. You are probably seeing alkaline etch damage. A stain hap... Read More
- How to Remove Wax From Bluestone Q. How do I remove a candle wax stain on bluestone? A. Here are the full instructions for candle wax stains: To remove candle wax that melted into the pores of the stone: Use a hot clothing iron (preferably one you don’t mind getting wax on) ... Read More
- How to Remove Plaster Stains on Slate 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 soluti... Read More
- Liquid Plumber Causes Alkaline Etch Damage On Limestone Q. A Liquid Plumber bottle leaked on my beige limestone bathroom floor. It looks like a wet mark. Is there anything I can try to remove stain? It is a heated floor. A. Liquid Plumber is a very high alkaline substance, which leads our stone expert to ... Read More
- Removing candle wax stain on natural stone 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 n... Read More
- Can Dye Be Removed From the Limestone 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 fo... Read More
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