Granite has become a popular choice for homeowners because of its durability, strength and wide range of color choices. According to Granite Polishing, granite "can be scratched by the traces of quartz in the soil" it comes in contact with. These minute scratches accumulate dirt over time, causing granite to lose its shine. Polishing granite can be done properly in just a few steps.
Clean granite with a soft cloth or sponge using a mild dish soap or commercial stone cleaner. Rinse and allow to dry completely. Check the surface for smudges or streaks. If you find any, clean the area again. You will need to clean your granite again after sanding and polishing. Do not use bleach, ammonia, vinegar, or cleaners containing lemon or orange oils, as these can cause damage.
You can sand granite either by hand or by using a belt or circular sander. You should start sanding with coarse-grit sandpaper like 40 or 60 grit. Begin sanding at the edges of the granite and work your way inward. Sand until the entire piece of granite takes on a uniform sheen. You will repeat this process with finer grit sandpaper until you are using 150 grit paper or higher. If your granite is partially polished, avoid the coarser grit paperand start out with a fine-grit paper. Clean granite before polishing.
Apply a granite polishing compound to a small section of the granite's surface. Polish with a buffing pad if you're using a circular or belt sander or soft cloth if you're working by hand in a circular motion until the granite takes on a high shine. If streaks or smudges appear, take a break and allow the surface to dry a bit before continuing. If you still experience streaking, apply more polish and keep buffing. Clean granite again.
Apply a penetrating stone sealer with a soft cloth in a circular motion over a small area. Watch carefully allowing sealer to soak into the stone, but don't allow it to dry. Buff sealer until it's wiped away leaving a shining surface. Sealers help protect granite from stains and scratches and will help your stone maintain its natural beauty longer. Granite should, at a minimum, be sealed every few years to protect the life of your stone.
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