Asphalt or concrete it all requires maintenance for a long and use full life. Crack sealing will prevent water penetration and the destructive affects freezing and thawing can create. Seal Coating is not all the same. GSB-88 or Gilsonite is by far the superior product. It bonds to the asphalt to protect and rejuvenate the asphalt from the destructive affect of the sun and moisture, Traffic...