Sealcoating is the process of adding a liquid sealer to an existing asphalt surface to seal it and fix cracks. The procedure protects the sublayers and foundation from the elements while also delaying the need for a new driveway. If you're a property owner seeking the best local driveway sealcoating in your region, use our search tool or select a US state to see a list of registered local asphalt resurfacing and sealcoating companies.