When you should clean an old stone building will depend on which climate your building is located in. If located in the northern hemisphere never schedule cleaning during the winter months, since freezing temperatures can cause the stone to spall.... Read More
Stone & Tile Restoration
Suppose you have an interior granite wall that had some silicon caulking used in the grout joints. The silicon then caused staining along the grout edges. A poultice successfully removed the staining, but then later, the stains reappeared. What... Read More
There are several methods that can be used to remove spray paint from granite. Time is of the essence, the quicker you can remove the paint the less likely it will penetrate deeply into the stone. If the stone is polished, try scraping the paint... Read More
If a stone fountain has a copper basin, chances are the stone may get green discoloration. The hard, green deposits are a combination of calcium deposits from the water and copper from the basin. The easiest way to remove them is to use a pressure... 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 recrystallization is used on Thassos marble, yellowing can occur. The yellowing is probably caused by a reaction of the chemicals in the recrystallization product and the iron in the marble. Not all recrystallization products cause this... 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
A poultice will work best at temperatures above 75 degrees Fahrenheit. Do not apply poultice below freezing temperatures. CAUTION Do not attempt to heat a poultice. Certain chemicals will ignite or explode when heated. Refer to the MSDS. Read More
It is not necessary to hone a polished stone prior to applying a poultice but honing will open the pores of the stone allowing for increased dwell time of the chemical. TIP If you hone the stone before applying the poultice make sure that the stone... 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