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Applying an impregnating sealer to stone will not make it waterproof. The idea of an impregnator is to make the stone water-resistant. In order to make the stone waterproof we would need to completely block the pores of the stone. If this is desired... Read More

Lichens and mosses produce oxalic acid, which can destroy calcium-based stones. Since they are considered plants, they will also attract moisture, which can cause all kinds of problems with the stone, including spalling. They can also cause the stone... Read More

The color in all stone is derived from minerals and organic matter. For example red marbles are red due to the presences of iron. Green marble gets its color from a mineral called serpentine and so forth. There are several excellent books on rock and... 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

Q. One of our AC repair techs accidentally dripped an oil called PVE (polyvinylether) on a client's natural stone. The stone was already there when the clients bought the home, so they aren't sure what kind of stone it is, but we can tell... Read More

By: Mike Marsoun NuLife Stone Care (www.nulifestonecare.com.au) I have noticed an alarming trade practice here in Australia which desperately needs to be addressed. The root of this problem is the same as in the US where you will find ceramic... Read More

Stone Myths By Frederick M. Hueston www.stoneforensics.com Over the past 20years I have heard many stories about the reasons stone will fail, turn color, fade or what ever. Many of these stories are funny and almost all of them are just plain... Read More

Q. I'm totally confused and need help. I'm looking to redo my bathroom and getting different answers on the use of stone tiles for the bathroom and shower. I have been told everything from it is very easy to seal and should only to be... Read More

Q. My honed black granite looks streaky, (from sealer application). How do I remove the sealer or do I need to re-sand the stone? A. You may have to call in a stone restoration professional on this. But first try this: Pour some acetone (the kind you... Read More

Why Water-Based Impregnators Leave a Remove Rainbow-Colored Film If your idea of fun as a kid was going outside with a bottle of bubble solution and a wand, it probably wasn’t long before you noticed a weird phenomenon where a swirling rainbow... Read More