Seal Coating Seal coating is the prime deterrent to asphalt deterioration. DLB Asphalt applies at least two coast of quality sealant to ensure proper asphalt pavement maintenance. Seal coating on a preventative maintenance schedule (every few years) will reduce pavement deterioration and more than double the life of asphalt pavement. The life of asphalt pavement seal coating is very cost effective when expertly applied. In addition, sealcoat:Improves appearance and property value/leases. The dark black color makes it look and wear like new.Slows oxidation and inhibits water penetration. Without seal coating, the oxidation process turns the pavement from black to gray as it continues to weaken the asphalt bonding. As the asphalt loses its strength more reveling and cracking