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. How do I remove cactus liquid from flagstone? The cactus was trimmed and the liquid splattered on the flagstone. It was not rinsed off right away and left several stains. A. You’re not alone. Cactus sap can surprise people with how quickly... Read More

Q. I am facing a problem with my Calacatta marble floor. Some tiles are getting darker because of the moisture content increment, so is there any chemical that can be used to suck out the moisture from marble, and return it into white color? Thanks... Read More

Q. I'm hoping for some help regarding our bathroom floor which is a dark grey very porous tile that is not glazed. There has been a ring of moisture around the base of our toilet on the tile that varies at time in size from 1/4 inch to 2 inches... Read More

Q. We just finished the installation of our walkway with bluestone 4 weeks ago. However, on almost every piece of the stone, there are different shapes and sizes of water stains like footprints or footballs on them and never go away even in the dry... Read More

Q: We are building a new house in South Louisiana. We have a concrete slab with concrete piers on top. My tile installer used a polyethylene membrane with thinset directly over the plywood subfloor. We installed a honed limestone tile. Now that... Read More