How to Clean Rust Spots From a Granite Sink

Granite is a hard, durable material that is ideal for heavy wear surfaces like sinks and counter tops. But, granite is also quite porous. Millions of tiny holes and cracks riddle its surface. Stains like rust from metal sink fixtures seep beneath the surface of the stone where they are hard to clean. Scrubbing alone rarely ever cleans rust stains on granite sinks. You must draw the stain out to remove it.

Diatomaceous earth
Bowl
Spatula
Plastic wrap
Tape

Instructions

- 1
  Mix diatomaceous earth with enough water to make a paste of toothpaste-consistency. Roughly 1 pound of this mixture will cover 1 square foot of stain.
- 2
  Spread a 1/2-inch layer of poultice over the rust stain and the inch of granite surrounding it. Press the layer down firmly to make sure it makes firm contact.
- 3
  Cover the poultice with plastic wrap. Tape the edges of the plastic wrap down to create a seal.
- 4
  Remove the plastic wrap after 24 hours.
- 5
  Scrape the putty off with a plastic spatula once it dries.
- 6
  Wash the spot with soapy water--one teaspoon per quart of water. Rinse with clean water and pat dry.
- 7
  Observe the granite. If the rust stain isn't gone, re-apply the poultice. If the second poultice does not remove the stain, the Marble Institute of America advises that the stain is likely permanent.

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