How to Repair Cracks in Asphalt Pavement - pavement cracks should be sealed ,How to repair cracks in asphalt parking lots and driveways. Asphalt crack filling and sealing in asphalt pavement how-to and information.Crack Filling | StateWide Parking Lot ServicesCrack Filling Frequently Asked Questions: When should a parking lot be crack filled? Can be done throughout the life cycle of a pavement; however, only isolated cracks should be sealed, never alligatored areas.