Seal coating is an important pavement maintenance procedure that can prolong the life of your pavement and improve its appearance. It also provides one of the greatest returns on your maintenance dollar. Western Asphalt uses an asphalt emulsion sealant that helps prevent damage caused by gas, oil, and UV rays. The sealant creates a barrier against the deterioration caused by these solvents, by weather and oxidation. It also restores the slate black appearance, while reducing future maintenance costs.