How to Choose the Right Asphalt Sealant for Cracks

How to Choose the Right Asphalt Sealant for Cracks 1

Understanding Asphalt Sealant

Asphalt sealant is a material used to protect and preserve asphalt pavement. It is a mixture of asphalt cement, asphalt emulsion, filler, and additives. Its job is to prevent water penetration and protect surfaces from UV rays and other elements. It also helps fill cracks and small holes, preserving the life of your asphalt pavement and saving you money on unnecessary repairs.

How to Choose the Right Asphalt Sealant for Cracks 2

Types of Asphalt Sealant

There are two main types of asphalt sealant: coal tar and asphalt emulsion. Coal tar is a petroleum-based product that is more durable and long-lasting than asphalt emulsion. It has been in use since the early 1900s and is still popular today. Asphalt emulsion is a water-based product that is easier to work with and safer for the environment. It is a newer product that has been gaining popularity in recent years.

Factors to Consider when Choosing Asphalt Sealant

When choosing asphalt sealant, there are several factors to consider:

  • Climate: Consider the climate of your region. Coal tar sealant is better suited for areas with extreme weather conditions, such as high heat and intense sun. Asphalt emulsion is better for areas with milder climates and less UV exposure.
  • Traffic: The amount of traffic the surface will endure plays a role in the type of sealant you should choose. Coal tar sealant is more durable and better for high traffic areas. Asphalt emulsion is better for lower traffic areas.
  • Cost: Asphalt emulsion is generally more affordable than coal tar sealant.
  • Environmental Impact: Coal tar sealant is a petroleum-based product and poses a risk to the environment. Asphalt emulsion is a safer, water-based product that is better for the environment.
  • Application

    When applying asphalt sealant, it is important to follow the manufacturer’s instructions. Generally, the surface should be cleaned and free of debris. Any cracks or holes should be filled before the sealant is applied. Asphalt sealant should be applied in two thin coats, each following the opposite direction of the other, to ensure even coverage. The surface should be allowed to dry completely before traffic is allowed on it.


    Once the asphalt sealant has been applied, it is important to maintain the surface. Regular cleaning and sweeping will help keep the surface free of debris. Any spills should be cleaned up immediately to prevent damage to the sealant. It is also a good idea to re-apply the sealant every two to three years to ensure the surface is well-protected.


    Choosing the right asphalt sealant for cracks is essential for protecting your pavement and prolonging its life. Consider the climate, traffic, cost, and environmental impact when choosing between coal tar and asphalt emulsion. Follow the manufacturer’s instructions for application and maintain the surface to ensure it stays well-protected. Looking to delve further into the topic? Learn from this detailed text, external material we’ve put together for you.

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