Fog Seal is a light application of asphalt emulsion sprayed onto a pavement’s surface. Fog Seals are effective complements to new and aged chip seal surfaces because the asphalt emulsion secures the aggregate from the chip seal process and locks it into place.
Benefits: Fog Seal helps to extend pavement life by providing a top “seal” that reduces water infiltration and oxidation. It provides a smoother, uniform black appearance to the surface of the road that improves aesthetics and visibility of pavement markings. The pavement’s dark color also increases the road’s temperature which benefits winter maintenance.
Challenges: To be effective, warm conditions with no chance of rain are necessary to ensure successful fog seal application.
What to Expect: The curing time for the fog seal material will vary depending on the pavement surface conditions and the weather at the time of application. Under ideal conditions, it is suggested that traffic be kept off the fog seal material for at least two hours. Typically, while one lane is being treated, traffic will be allowed on the opposite lane.