Removing dark spots from granite often involves creating a poultice to draw out the stain. The specific method depends on the type of stain causing the discoloration.
Identifying the Stain
Before you begin, try to identify the source of the dark spot. This will help determine the best cleaning solution. Common culprits include:
- Oil-based stains: These appear as dark, greasy spots. (e.g., cooking oil, grease)
- Water-based stains: These can be caused by coffee, tea, juice, or other liquids that seep into the granite.
- Organic stains: These may be from food spills. (e.g., fruit, wine)
Poultice Method
A poultice is a paste-like mixture that absorbs the stain. Here's the general process:
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Clean the surface: Wipe the granite surface with a clean cloth and a granite cleaner or mild dish soap and water.
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Prepare the poultice: The specific ingredients will depend on the stain type:
- For oil-based stains: Mix baking soda with water to create a thick paste with a puffy consistency.
- For other stains: Mix hydrogen peroxide with baking soda to create a similar paste.
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Apply the poultice: Spread a thick layer (about 1/4 inch) of the paste over the stained area.
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Cover the poultice: Cover the poultice with plastic wrap and tape the edges down. This prevents the poultice from drying out too quickly.
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Wait: Allow the poultice to sit for 24-48 hours. For stubborn stains, you may need to leave it on longer.
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Remove the poultice: Remove the plastic wrap and let the poultice dry completely. Once dry, gently scrape it off with a plastic scraper.
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Clean and seal: Wipe the area with a damp cloth and allow it to dry. Consider resealing the granite to prevent future stains.
Important Considerations
- Always test: Before applying any cleaning solution to the entire surface, test it in an inconspicuous area to ensure it doesn't damage the granite.
- Avoid harsh chemicals: Do not use abrasive cleaners, bleach, or acidic substances like vinegar or lemon juice on granite, as they can etch or damage the surface.
- Repeat if necessary: If the stain is still visible after the first attempt, repeat the poultice process.
