How to Fill Tiny Holes on a Granite Countertop

Fill the voids in with colored caulking. For example, black granite with black grout could use a same-colored caulking, but white granite with a brown grout will want a white caulking to fill in the holes on the face. Work the caulking into the surface of the stone with your finger to fill the hole, then wipe the surface clean with a damp towel or sponge.

Purchase a granite repair kit to fill the holes on the granite tile. Clear-colored specialty blends of polymers and resins, granite repair kits can be found at any home improvement store. Similar to the clear hardener used to fix windshields, the filler in the kits fills in the voids so that the granite can go on having life.

Take professional steps and use a resin to fill the voids in your granite. Epoxy resin fills the the voids in granite slabs and bonds exceptionally hard, which helps reinforce the natural stone. Polyester resins can also be used, although they do not add any additional strengthening elements to the stone, instead being designed as a simple hole filler.

Apply the filler or resin with a thin plastic putty knife and work the product over the top of the holes. Spread the product in several different directions to fill the holes completely. Scrape any excess off the face with the putty knife and let the filler harden at least 72 hours.

Clean any excess resin or filler off the face of the granite with an old rag and some mineral spirits. Dampen the rag with the spirits and rub it across the area to clean the face of the granite. Repeat the process as necessary to remove all residue for a polished finish.