We recommend letting your new asphalt driveway cure for a year before the first application of seal coating. Sealcoating will protect asphalt driveways and parking lots from the damage caused by oil leaks and weathering. The seal coat will maintain it's integrity for 3 to 4 years until a new application is necessary. Sealcoat also provides an aesthetically pleasing new black shine. Applying too much sealer or too often will cause cracks.