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Tack Coat Best Practices

(1.5 hrs., 1.5 PDHs)

(registration required)

Register online to view the webinar recording

Tack coats are a vital component of an asphalt pavement’s structural system because they bond the multiple asphalt lifts into one monolithic layer (think of the laminate wood beam).  Poor tack coat application results in poor bonding of the asphalt layers.  The usual pavement distresses associated with poor or no tack coat is slippage cracks (at locations where traffic is braking) along with delamination of the surface lift.  But quite often poor tack coat also causes more classic structural pavement distresses, namely fatigue cracking and potholes, without the poor tack being recognized as the source of these early failures.  Despite these facts, little attention is often paid to tack coat operations by both contractors and the agencies, and pavement performance suffers.

This 1.5 hour webinar will provide participants with an introduction to some of the information presented in the full half-day workshop that is offered by FHWA and the Asphalt Institute on this topic.  The best practices and recommendations to achieve well bonded pavement structures presented in this webinar are based on an extensive review of literature, research, and other information sources on this topic.

This webinar will cover the following:

  • Tack Coat Terminology
  • Purpose of Tack Coats and Consequences of Poor Bond
  • Relative Cost for Tack Coat
  • Materials
  • Tack Coat Field Operations
  • Common Tack Coat Questions
  • Areas of Known Agreement

Dave Johnson, P.E. – Asphalt Institute Regional Engineer

Instructions for viewing a recorded webinar (PDF 706 kb)

Download the webinar slides (PDF 1.1 mb)

(A PDH Certificate is available upon request after you view the recording by sending an email to with the name of the session and full name you used to register)

Fees & Registration
Registration to view this recording is Free.

NOTE: Registration is per individual. Only the registered person will receive emails about the webinar and will be recognized for a PDH certificate.

Register online to view the webinar recording

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