Seal coating is a protective coating to extend pavement life by reducing oxidation from the sun, oil damage from vehicles, and even rain or irrigation water damage.
The success of a seal coat means getting the pavement as clean as possible, usually performed with blowers and brooms, sometimes through power washing. Two layers of seal coat are preferable to add resistance to wear from traffic. Oil spots can be treated with chemicals to help with adhesion.
Many contractors go far beyond the proper dilutions rates for seal coating and stretch materials over too large an area. We always adhere to the manufacturer’s recommendations. Areas usually need to sit overnight to allow seal coating to dry before removing barricades and permitting traffic to resume.