Driveway sealcoating or driveway sealing along with crack sealing, can double the lifespan of your driveway. A sealcoat is a protective layer applied to a non-highway asphalt surface to shield it from damaging elements such as sun, rain, snow and automobile fluids. It also has many other benefits, including preventing surface erosion, improving pavement flexibility, sealing small cracks, waterproofing the pavement and making the surface easier to clean. The smooth dark surface of a sealcoated driveway also looks better and keeps the driveway looking new long after the sealcoat is applied.