How to Clean Discolorations on Granite

Despite its reputation for being impervious to stains, granite is a porous stone that needs special care. Granite countertops are usually treated with a penetrating sealer that keeps stains from absorbing into the stone and causing discoloration. However, sealer wears away in time, leaving the counters vulnerable. Granite on floors and other surfaces may be untreated, and so they are perpetually prone to staining and discoloration. Protect your granite by cleaning spills promptly. If discoloration remains, wash it with baking soda or mild dish detergent mixed with warm water. If that fails, apply a poultice, which is a paste made from an absorbent material that draws out the stain as the poultice dries.

Water
Talcum powder
Ammonia or hydrogen peroxide
Plastic wrap
Toothpick
Painter's tape
Damp cloth
Distilled water
Dry cloth

Instructions

- 1
  Wet the stained area with water.
- 2
  Mix a poultice the consistency of peanut butter by combining talcum powder with the appropriate chemical ingredient. Use ammonia for greasy stains. Use hydrogen peroxide for other stains.
- 3
  Spread the poultice over the discoloration and 1 inch beyond its borders in a 1/4-inch layer.
- 4
  Cover the poultice with plastic wrap. Tape the edges of the plastic wrap to the counter with painter's tape.
- 5
  Poke several air holes in the plastic with a toothpick.
- 6
  Leave the poultice on the stain until the poultice has dried completely. Drying usually takes 24 to 48 hours.
- 7
  Remove the plastic wrap and tape. Wash the poultice off the granite with a damp cloth. Clean residue with distilled water.
- 8
  Buff the area with a dry cloth to restore the granite's shine.
- 9
  Repeat the poultice process up to five times if the discoloration remains.

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