Asphalt overlays are very common on old parking lots, roads and driveways. Overlays are more cost effective than complete asphalt removal and replacement. The old asphalt pavement must be properly inspected, sometimes the asphalt is past the point of repair and it must be removed completely. If the old asphalt is not gator cracked, or full of potholes an overlay can be installed simply by cleaning and tacking the old asphalt. Asphalt with cracks larger than 1/4" must be therm