The first thing we always do when constructing a concrete driveway is, remove any existing concrete, asphalt, or paving stones. Being the full-service concrete contractor that we are, we have the equipment needed to handle the concrete breaking and removal that is necessary, no need to hire a separate concrete break and removal contractor. Next, we excavate 10 inches below finish grade, which is to ensure your new driveway will have a proper gravel base, next we form and gravel the driveway. The next part of driveway construction is to compact and install the rebar. The Concrete slab thickness is most often poured at 4 inches thick, and then a sealer is applied.