Fog Seal

Find a Contractor/Supplier

For Pavement Condition

(PCI between 70 and 100)

Fog seal treatments are a single, light application of emulsified asphalt to an existing asphalt surface. This type of maintenance treatment can be helpful to renew weathered (oxidized) asphalt surfaces. It can also improve the surface appearance, seal minor cracks, fill surface voids, and inhibit raveling.

  1. 2 to 4 years of life extension depending on the existing conditions

Issues Addressed

  • Minor surface cracks

    Fog seal treatments can help seal and fill in minor surface cracks on the pavement. The asphalt emulsion penetrates the cracks, sealing them and preventing water from getting in. Water can cause further damage through freeze-thaw cycles.

  • Oxidation

    Over time, exposure to sunlight and oxygen can cause the asphalt binder in pavement to oxidize, resulting in pavement aging and brittleness. Fog seal acts as a protective barrier, shielding the pavement from the harmful effects of UV rays and oxidation.

  • Raveling (due to segregation or poor compaction)

    Fog seals can help bind loose aggregate particles and improve the bond between the aggregate and the asphalt binder. The emulsion in the fog seal fills the spaces and reinforces the surface. It reduces the risk of more raveling.


  • Protects the pavement structure from moisture intrusion and oxidation
  • Improves pavement life and may delay the need for major maintenance or rehabilation
  • Improves road safety by enhancing color contrast between pavement surface and road markings 

Common Combinations

Chip seal + Fog seal

Full Depth Reclamation + Fog Seal

Cold In Place Recycling + Fog Seal