Asphalt interlayers consist of a family of technologies used to improve the performance of a pavement section when applied at or between 1 or more layers of pavement. They are often times used in mill-and-fill asphalt maintenance applications to extend the life expectancy of the repair.
Asphalt interlayers provide a moisture barrier to stop surface water from entering the road base. They form a stress absorbing membrane to increase pavement fatigue life and to retard reflective cracking. Ultimately, interlayers increase the amount of traffic a pavement section can withstand, serving to optimize your budget by stretching maintenance cycles.