Q. I have honed Crema Marfil flooring. When a plumber relocated my sink, four tiles had to be replaced. The new tiles are much lighter than the existing tiles. Is there a way to darken the new Crema Marfil tiles so they don’t stand out as much?... Read More

Q. Can an impregnator be used to waterproof stone? A. Not exactly. An impregnator will make the stone water resistant, but it will not make it waterproof. Impregnating sealers are designed to penetrate the surface and fill the microscopic pores... Read More

Q. How do I remove pet discolorations on my bluestone hearth that did not come clean with mild soap / water/ scrubbing? A. The answer to this question depends on what caused the discolorations. Bluestone can becomes discolored by pets in various ways... Read More

Q. What is the best way to remove a blue stain on flagstone caused by plant fertilizer? It is several days old. The flagstone is an outside border on a raised planter bed. A. Blue fertilizer stains can be challenging on flagstone, especially outdoors... 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. I have tried removing rust stains on these stone columns (on testing the base is limestone), and I believe the columns are the same? I've used a number of different branded products and oxalic acid but none of these have removed/lessened the... Read More

Q. We recently decided to use our small patio set, and we took it out of storage, and there is a broken bird a egg on the stone top. Obviously, this must have happened in spring. The contents of the egg is as hard as a rock. Is there a safe solution... 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

Q. I cleaned soot off my fireplace stone, but it won't come out where it has seeped into the stone. A. Smoke and soot are made up of very fine carbon and oily particles that can become absorbed into the surface of porous stone. Once that happens... Read More

Q. After we applied a color enhancer to our Eromosa stone (from Owen Sound, Ontario), we noticed some efflorescence. Not sure if it was there before the enhancer was applied. Is there any way to get rid of it? A. What you’re seeing is very... Read More