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What Impregnator is Supposed to Do Ideally, when impregnator is applied to stone, it penetrates into the pores of the stone. However, this isn’t always the case.  What Causes Impregnator to Bead Fred Hueston, Chief Technical Director of... 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

Poulticing Walls and Other Vertical Surfaces Making sure that a poultice is held securely in place is important for several reasons: The poultice needs continuous contact with the surface to work properly. If the poultice shifts off of the stained... Read More

Graffiti Removal Procedure for Stone, Masonry, and Tile Surfaces By Frederick M. Hueston, www.stoneforensics.com If your beautiful building, wall, or other surface has just become the unintended canvas for graffiti, your first reaction might be to... Read More

All sealers, both impregnators and coatings are designed to slow down the staining process. This does not mean that you can leave the spill on the stone indefinitely. It is always a good practice to clean the spill up as quickly as possible. Note:... Read More

If the product you are using is a true impregnator it will not add or subtract from the slip-resistance of the stone. The impregnator is designed to penetrate below the surface of the stone. Check the product label carefully.CAUTION If an impregnator... 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

Yes, it should work as long as the stain occurred after the stone was sealed. If the stain was present before the sealer was applied there is a good chance that the stain will be sealed into the stone making removal difficult. If this is the case the... Read More

This is a very common problem on granite. Granite is a very porous stone, more porous than most marble. Because of its porous nature, granite has the ability to retain a great deal of moisture. The dark area in this case may simply be excessive... Read More

The yellowing and graying of certain Italian and Greek white marbles is a common problem that I see all over the country. There are several possible causes for this condition: Maintenance technique-Take a close look at your maintenance program. Are... Read More