Tack Coat

Find a Contractor/Supplier

For Pavement Condition

Set applicable pavement conditions / PCI levels.

Bonded versus Unbonded asphalt layers

Tack Coat, more accurately called Bond Coat, is critical to the long-term performance of an asphalt pavement.  Bond coat ensures proper bonding between layers of asphalt. A strong bond between pavement layers transmits traffic loads through the pavement structure.  When properly bonded, the cross section of a road will act as a single unit, ensuring vital structural integrity and helping prevent many of the major problems associated with road failures.    







  1. When applied, bond coat prevents debonding and major road failure, saving up 100% to the cost of a top lift
  2. Many emulsions used for bond coat have little or no petroleum solvents or hydrocarbon emissions. They are also used at a lower temperature so that saves energy and provide a safer work environment.
  3. Properly applied, tack coat can double the life-span of a standard HMA road
  4. Bond coat adds stability to a road by bonding multiple layers together allowing them to act a single unit

Issues Addressed

  • Debonding
  • Slipping
  • Shoving
  • Rutting
  • Delamination


  • Helps create a monolithic structure
  • Significantly reduces delamination
  • Improves fatigue life
  • Reduces rutting and shoving
  • Facilitates better compaction

Common Combinations

Tack Coat is incorporated in nearly all new road construction and may be combined with many other treatments.