Crack Filling is one of the best ways to reduce pavement deterioration. Properly filled cracks prevent water from entering the stone base under the asphalt. Once this water enters the base it weakens everything and only gets worse when it freezes. As things expand and contract in the winter large voids are created and eventually lead to potholes. When cracks are filled correctly they can dramatically extend the life of the asphalt. This is an inexpensive process that should be considered before winter comes.