Q.  Hi. I have what appears to be an oily stain (which I think is from candle wax) on sandstone hearth. It's been there several years. Is there any hope of getting it out? I tried acetone and it did nothing. Any help for advice you can... Read More

Q. I have a sandstone fireplace from the 80s; the previous owners had a fireplace screen door on it and they caulked around the door onto the stone. I removed the fireplace screen door and caulk, but it left a stain that I can't remove. I have... Read More

Q. I am trying to learn more about Rainbow sandstone for a bathroom floor. We can get some tile that is 1" thick but I wonder if thinner sandstone is available, and is thinner okay to use? I only can find suppliers from India; very little on the... Read More

Q. We had a beige sandstone counter top installed for an outdoor kitchen. It is sanded smooth and was sealed with a sealer (don‘t know what kind just said Sealer on the can) about 3 coats. Some was spilled on our manufactured patio pavers which... Read More

Q. We recently had some staining on our sandstone patio pavers where merbau timber was left on several pavers. Could you please help with how we might remove these stains?  A. Merbau is known for its rich reddish-brown color and natural oils and... Read More

Q. What should I use to get out polyurethane stain on my sandstone step? A. The methods for removing polyurethane from stone will vary, depending on what type of polyurethane caused the stain. Each type behaves differently once it hardens or seeps... Read More

Q. We had a beige sandstone countertop installed for an outdoor kitchen. It is sanded smooth and was sealed with three coats of sealer. I don’t know what kind—just said “sealer” on the can. Some was spilled on our manufactured patio... Read More

Q. I have what appears to be an oily stain (which I think is from candle wax) on sandstone hearth. It‘s been there several years. Is there any hope of getting it out? I tried acetone, and it did nothing. Any help for advice you can provide is... Read More

Acids generally will not harm granite but hydrofluoric acid is the exception. Hydrofluoric acid will etch polished granite as well as glass. Never use HF on polished granite. Read MSDS and label directions. FYI Hydrofluoric acid is a common chemical... Read More

Q. Please advise what kind of poultice should I use for red shirt dye in Yorkshire stone flag stone. A. Yorkshire stone is a soft, thirsty sandstone that grabs color quickly. The good news is that most clothing dyes are organic, which means they can... Read More