How To Remove Hard Water Stains From Granite Countertops. You will begin by giving the scaled-up area a good soak with the CLR cleaner and right away you will see the limescale start to break up and lift away. If there are only a few stains you can remove them using a mild detergent and water on a sponge.
Then remove the poultice rinse it with water and buff dry with a soft cloth. Spread the mixture over the spot cover it with plastic wrap that youve poked a few holes in and secure it with masking tape. But first you should remove any large crusty hard water build-up using a plastic scraper to get the bulk of it off.
You can also use a cleaning product tailored for cleaning granite.
All you need to do is make a poultice out of baking soda with a small amount of water to remove the staining. After 24 hours remove the plastic and let the poultice dry for another 24 hours. You can also use a razor blade to gently scrape off the mineral deposit. The first -- and easiest to clean -- is a simple water stain that forms around the bottom of a glass or other container that sits on the countertop for too long or water droplets that do not evaporate quickly.
