Driveway sealcoating can help lengthen the life of your asphalt or concrete driveway. Applying sealer to your driveway will cause your driveway to look like new. The driveway sealer will prevent water, dust and oils from leaking through and causing cracks or holes in your driveway. Most commonly, we apply sealer to asphalt driveways. Many homeowners have concrete driveways sealed as well. Homeowners can buy driveway sealer at local hardware stores, and can apply it themselves. Many homeowners hire a local company to professionally apply the sealant to save time.