Driveway sealer is a protective coating applied to asphalt driveways to enhance their durability and appearance. It helps prevent damage from water, oil, UV rays, and harsh weather conditions, extending the life of the driveway. The sealer fills small cracks and creates a smooth surface, making it easier to clean and maintain. There are different types of driveway sealers, including coal tar and asphalt-based options. Each type has its own benefits and application methods. Regular sealing, typically every 1 to 3 years, can keep a driveway looking new and prevent costly repairs in the future.