Although granite is one of the most durable natural stones available, it can still suffer accidental damage such as from a cast iron skillet being dropped on the surface. In addition, natural accidents such as the house settling dramatically over a short period of time or an earthquake can cause cracks and chips to occur. Cosmetic cracks and chips are easily repairable with epoxy solutions sold at any home improvement store, allowing you to bring your granite slab or tile back into working condition without stressing about replacing the stone with an expensive remodel.
Wear rubber gloves throughout the entire process to avoid chemical reactions to your skin from the cleaner and the epoxy solutions.
Clean the surface of the granite around and inside of the chip or crack with a stone cleaner. Apply the cleaner with a sponge and ensure that you remove all dirt, debris, grease and other buildup. Allow the area to dry for 24 hours.
Cover the areas surrounding the crack or chip with masking tape so you can keep the mess to a minimum. This also protects the surface of the surrounding granite during the finishing process of the repair.
Mix up the epoxy solution according to the manufacturer’s instructions. As a general rule, epoxy comes as a two-part solution.
Apply the epoxy solution to the chip with the applicator provided by the epoxy manufacturer. Spread it over the chip and push it down into the area so that excess is oozing out over onto your masking tape.
Wait 15 to 30 minutes, until the epoxy starts to harden. Gently scrape any excess off with the flat razor blade so that the epoxy is flush with the slab or tile surrounding it. Avoid excess force or you will cut and scrape the tape off the surface. Allow the epoxy to dry for 12 hours.
Smooth the repaired section with the sandpaper included with the epoxy solution. Avoid sanding through the masking tape as best you can, since you want to sand only the epoxy filler, not the granite surrounding the fix. Remove the masking tape once you are finished.