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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

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

Be sure to cover your poultice with plastic in the case of rain. You may find that the poultice may dry too rapidly outdoors. Try covering with your poultice plastic with a layer of black plastic to block the sun light. TIP To prevent rain from... 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

I would call the contractor, but it may not be necessary to replace the panels. These dark circles may be the result of moisture bleeding from the setting mortar. It is common for panels to be installed by spotting the backs of the panels with... Read More

Flamed granite has a rough texture which will tend to hold dust and dirt. Prepare a solution of stone soap or neutral cleaner and warm water. Flood the floor with this solution and either agitate with a scrub brush or machine-scrub. Pick up the... Read More

There are several methods of sealer application. Most sealers can be sprayed on, mopped on or applied with a lamb’s-wool applicator. I prefer the lamb’s-wool applicator because it prevents streaking. Before choosing a method of... Read More

Unfortunately, most polyurethane finishes require strong solvent-based chemicals for removal. Methylene-chloride strippers as well as a number of safe strippers are available, but be forewarned: removing polyurethane is a messy job. I know several... Read More

Wax build-up on a vertical surface can be difficult to remove, since most strippers will run. Janitorial supply stores do offer spray-on baseboard wax removers that work very well; since they are applied as a foam, they will cling to vertical... Read More

Removal of rust on terrazzo will typically require both a powder poultice and a commercially available rust remover. Iron-Out mixed with a plain poultice powder works well. You may also want to try using the Iron-Out alone, mixing it into a paste and... Read More