Concrete or core drilling, as it is also known, is the process of drilling exact holes in concrete floors, walls, asphalt, cinder-block, and soil. Drilling in concrete is high in demand because it offers solutions for many construction problems. Before we drill a hole we need to know the aggregate composition of the concrete and whether or not rebar or post tension cables are present. At Concut Concrete Cutting Services we use GROUND PENETRATING RADAR (GPR) to determine what obstructions if any could be encountered. Some concrete is harder than others which makes it more difficult to drill through. Concrete that contains limestone, slag, and coral are somewhat soft and easier to drill. Concrete mixed with river gravel or quartz is of medium difficulty to drill. Flint or granite aggregate is among the most difficult to drill because of its hardness. Concut Concrete professionals use diamond tipped core drills as small as 1/2″ up to 60″ in diameter.