Chip Seal Best Practices

This course is currently not scheduled. Stay tuned for future sessions.
(8:30–10:30 am PT).

Chip seals are a common type of surface seal. They provide one of the best forms of sealing the surface against moisture intrusion, can significantly increase the surface friction, and can extend the service life of an asphalt pavement as a preservation treatment. Although chip seals typically provide good performance, there are occasions when a chip seal fails prematurely or does not provide the expected service life. This training describes how to achieve maximum performance and avoid premature failure.

After the training, you will be able to:

  • Compare the types of chip seals based on their strengths and weaknesses.
  • Use standard guidance and pavement condition information to select a good chip seal candidate.
  • Identify design and construction practices that ensure performance.

Who Should Attend

Attendees for this class include people who select, design, construct, or inspect chip seal projects.

Prerequisite Lesson

Please complete the following brief self-paced training before attending.:


Greg Duncan is a Senior Engineer at Applied Pavement Technology, Inc., with more than 30 years of pavement materials, construction, and roadway maintenance engineering experience. He is a certified National Highway Institute (NHI) instructor and regularly teaches NHI’s “Maintenance Leadership Academy” and “Constructing and Inspecting Asphalt Paving Projects” courses. Greg regularly works on national and state projects dealing with preventive maintenance treatments.


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Chip Seal Best Practices