Q. Our house was built in 1967 and has black slate flooring inside and on the porch and terrace. We've had some restoration work done, but we're not happy with how it looks. Even after sealing, it doesn't have the polished or wet look... Read More

Q. How can I remove a boiled linseed oil stain from natural stone? A. Boiled linseed oil can leave a dark, sticky, and persistent stain on natural stone that doesn’t respond to simple cleaning. It penetrates the pores of stone and resists water... Read More

Q. Water feature has chlorine residue buildup causing a white stain on natural rock waterfall. How can I remove the chlorine residue from the rock? A. What you are seeing is likely mineral deposits. Chlorinated water doesn’t cause the deposits,... Read More

Q. I had a delivery guy accidentally drop two bottles of olive oil on the stone in the hallway of my apartment building. I'm not sure what kind of stone it is, but it's matte looking and apparently very porous. Now, my landlord is saying I... Read More

Q. We have 4 chocolate stains on our natural stone hearth. The stains have been there just a few days. We got off the actual chocolate and tried to clean the stain with a window surface cleaner. It helped but the stains remain. How should we proceed?... Read More

Q. Any help as to how to remove crayon from stone would be greatly appreciated! A. Crayon marks on stone are a combination of wax and pigment. Both will need to be removed from the surface and the pores of the stone. Start by carefully scraping any... Read More

Q. I purchased prefab granite counters after being told it was every bit as good as regular granite slabs. They were installed in January and in March I started noticing the granite was cracking and small pieces popping up. A piece got caught in my... Read More

Q. White Macaubus quartzite was installed yesterday and I noticed this "crack" when I hit gone from work and inspected it. Question is, is it a crack or fissure? When I run my nail over it, it does get caught. Just want to make sure I handle this... Read More

Q. I bought 3 beautiful slabs of quartzite for my bathroom countertops and tub surround. The stone company I purchased them from told me it was very hard stone and to make sure my fabricator could work with it. My fabricator said "no problem". My... Read More

Q. What product is successful to remove calcium build-up on our family marble gravestone?  A. The best products for removing calcium build-up on marble gravestones, headstones, monuments, and other exterior marble are cleaners specifically made for... Read More