Damage to Granite Countertops: Can Citrus Juice Damage Granite?


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Question: Can citrus juice damage granite countertops? How can I keep my granite countertops protected?

Answer: First things first:  Granite is actually resistant to household acids such as citrus and vinegar because it’s made from hard minerals like quartz, feldspar and micas.  Marble countertops, on the other hand, contain a good deal of calcium, which makes them sensitive to these acidic spills.

Granite isn’t a perfect surface, though. A natural material, it actually has small fissures and cracks that juice, oils, grease and other kitchen messes can seep into.  While they won’t eat away at the stone, they may affect your finish and cause discoloration.

Sealers can help seal in these cracks and help prevent stains from going deeper into the stone.  In fact, granite dealers recommend sealing your counters once or twice a year, depending on how much wear and tear they receive.

Most home improvement stores and granite dealers sell sealers that you can apply yourself.  Remember, you should always apply sealer to dry, clean granite.  Clean the area, then let it sit for 24 hours.  Next, apply sealer, let it dry completely, and then buff it with a terry-cloth towel.

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