Q. Unfortunately, I had a decorative Halloween candle holder with the fake light in it turned on. Part of the black plastic from the candle holder melted from the heat of the cast concrete fireplace and ran down the mantel. I cannot get the stain out... Read More

Q. How do we clean white spots from bird droppings on colored concrete? We have a church under construction with tiles on the floor. Windows hadn't been put in yet, and birds came in. The tiles are left stained white from the droppings.Â... Read More

Q. Do you have products that will work on concrete? A. Are you a homeowner or a maintenance professional? Are you looking for general cleaning products or something else? We can recommend something specific with more details, but in general, we... Read More

Do Not Apply a Silicon Impregnator Over a Stain If natural stone is stained, applying a silicon impregnator is a bad idea. The stain should be addressed first. Once the stain is removed, then apply the impregnator. Fred Hueston, Chief Technical... Read More

How to Prevent Urine Stains on Marble Floors In men’s restrooms with marble floors, urine stains and odors can be a real problem. Since marble is porous, marble floors in men’s restrooms should be sealed to inhibit staining. The sealer... Read More

How to Remove Oil Stains on a Granite Floor Oily stains on a granite floor can be difficult to remove. Assuming you have not had success cleaning the affected area, your next step is to apply a poultice.  Fred Hueston, Chief Technical Director of... Read More

When carpet is removed from terrazzo, it often leaves behind a large yellowed area the shape of the carpet. This is common problem with carpets that have jute or rubber backings. Moisture becomes trapped under the carpet and causes the dye in the... Read More

When poulticing a rust stain on a marble floor, the stain can become darker and more wide spread. What is happening? Chances are the source of the rust is under the tile. A nail or metal object may have been left behind when the tile was installed.... Read More

Once a stain is removed, it may come back, depending on how deep the stain is or what caused the stain in the first place. If the stain is coming from behind the stone, chances are it may come back. If this is the case and the stain reappears I would... Read More

Q. I used an oil stain remover made for natural stone on my light whitish-gray quartzite to remove a very faint oil ring. I did only one section and the area turned white, almost bleached. From what I could tell, the stain was gone. I contacted... Read More