A lot of people mistakenly believe that because they are made of stone and are being used in the kitchen, that granite counters are impervious to most stains and spills. Unfortunately, many of the granites on the market are extremely porous and can absorb liquids right into them if they are allowed to sit on the stone long enough. If this occurs with water, it will eventually evaporate, leaving only a temporary darkening of the stone. If, however, oil was absorbed by the stone, the darkened area won’t lighten up again on its own. To remove the stain, you need to create a poultice to get it back out.
What Is a Poultice?
A poultice is any kind of substance that can absorb or remove a stain from inside the stone. You can purchase poultices from many stone fabricators or sellers, or you can make your own. Spread on top of the oil stain, a poultice will pull the oil from within the stone up to the surface, where it can be wiped away.
The key is to ensure that you use the type of poultice for the type of stain you have, and that you only use materials on your stone that won’t harm or etch the surface.
Homemade Oil Poultice
Try this quick and dirty homemade poultice for oil stains on your granite counter to help pull the oil out.
• 1 cup unbleached flour
• Dawn dishwashing liquid that does not contain any lemon
Slowly mix the dishwashing liquid into the flour until you get a paste the consistency of peanut butter. Spread the poultice over the oil stain and stretch a piece of plastic wrap over it. The Dawn will help cut and eliminate the oil while the flour helps to pull it up and out of the stone. Let it sit for one hour, then wash the area with a PH neutral stone cleanser.
Once you’ve removed the stain, seal your counter with an impregnating, silicone based sealer to help prevent new stains from forming.