Chip Seal: Concrete and Asphalt?

Paving machinery

When it comes to maintaining and preserving driveways and road surfaces, chip seal is a popular option. However, can it be applied over different materials such as concrete and asphalt? In this blog post, we will delve into the topic of chip sealing over concrete and asphalt, discussing the advantages, disadvantages, and considerations involved in the process.

Understanding Chip Seal:

Chip seal is a cost-effective pavement treatment that involves applying a layer of asphalt binder followed by a layer of aggregate chips. It provides a protective coating, enhances traction, and extends the lifespan of the surface. Traditionally used on asphalt roads, this seal is known for its durability and ability to withstand harsh weather conditions.

Chip Sealing over Concrete:

Applying a chip seal directly over a concrete surface is not recommended due to fundamental differences in the materials’ properties. Concrete is a rigid material, whereas chip seal relies on flexibility to adapt to the natural movement of the underlying pavement. Attempting to chip seal over concrete can lead to cracks, unevenness, and premature deterioration.

Chip Sealing over Asphalt:

Chip sealing over existing asphalt surfaces is a viable option. It can help rejuvenate worn-out asphalt, prolong its lifespan, and provide an additional layer of protection. However, certain considerations should be kept in mind:

  • Surface Condition: The existing asphalt surface must be in relatively good condition, free from extensive cracking, potholes, or major structural issues. Chip seal is not a remedy for severely damaged asphalt.
  • Proper Preparation: Before chip sealing, the asphalt surface needs to be thoroughly cleaned, repaired, and properly primed. This ensures proper adhesion between the layers and maximizes the effectiveness of the treatment.
  • Compatibility: It is important to consider the compatibility between the chip seal materials and the existing asphalt. Consulting with a professional paving contractor can help determine the suitability of chip sealing for your specific asphalt surface.

Advantages and Disadvantages of Chip Seal:


  • Cost-effective compared to other pavement treatments.
  • Provides a protective layer against UV rays, water, and oxidation.
  • Enhances skid resistance and traction.
  • Restores the appearance of worn-out asphalt surfaces.
  • Can extend the lifespan of the pavement.

Disadvantages:Paved road off into the distance

  • Rough texture, which may not be suitable for all applications.
  • Requires periodic maintenance and reapplication to ensure longevity.
  • Can result in loose aggregate during the initial curing period.
  • Chip seal is not a solution for extensive asphalt damage or underlying structural issues.

Knowing your chip sealing helps you:

While chip sealing over concrete is not recommended, it can be a viable option for rejuvenating asphalt surfaces. Proper preparation, compatibility assessment, and professional guidance are crucial for achieving the best results. Pickett’s Paving is your trusted partner for all your paving needs. Contact us at 608-644-0245 or email [email protected]. Our experienced team will assess your pavement and provide expert recommendations tailored to your specific requirements.

Remember, regular maintenance and timely repairs are key to prolonging the lifespan of your driveway or road surface. Whether it’s chip sealing, crack sealing, or asphalt repairs, professional assistance ensures the longevity and quality of your pavement investment. Trust Pickett’s Paving to deliver top-notch services that enhance the durability and appearance of your asphalt surfaces.