Asphalt driveways are an investment for your home that is well worth protecting. By spending a little extra time and money patching and sealing your driveway, it can extend the life of the blacktop and improve the curb appeal, as well as the value of your home. But before you apply a topcoat sealer, you must inspect the driveway and make the necessary repairs. Here's how: BEFORE YOU SEAL THE DRIVEWAY 1. Look for trouble spots Carefully inspect every square foot of your d