Hot Asphalt

Top Tips for Fixing Cracks in Hot Asphalt: An In-Depth Guide

Asphalt surfaces tend to crack over time because of weather fluctuations, heavy traffic, and natural wear and tear. Proper maintenance, including hot crack repair, is essential to prolong the lifespan of asphalt pavements and prevent further damage. This blog post will discuss the vital procedures, practical methods for sealing cracks, crack sealing standards, and guidelines to ensure successful hot crack repair projects.

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Procedures of Asphalt Crack Repairs

1. Assessment: Begin with a comprehensive inspection to evaluate the damage’s extent. Identify the types of cracks, such as transverse, longitudinal, or block cracks, and prioritize them based on their severity.

2. Cleaning: Clear the cracks of debris, vegetation, and moisture. Use high-pressure air or a wire brush to ensure proper sealant adhesion.

3. Routing: To achieve more effective sealing, it may be necessary to route the cracks to a uniform width and depth. This step ensures a clean, uniform reservoir for the sealant.

4. Heating: Heat the area around the crack to eliminate any remaining moisture and enhance sealant adhesion. Specialized hot air lances or infrared heaters are typically employed for this purpose.

5. Sealing: Use a specialized applicator to apply hot rubberized crack sealant. The sealant should thoroughly fill the crack and form a tight bond with the asphalt.

6. Cooling: Allow the sealant to cool and solidify, creating a durable, flexible bond capable of expanding and contracting with temperature changes.

Best Way to Seal Cracks in Asphalt

The most effective way to seal cracks in asphalt is by using hot rubberized sealant. This material is specially engineered to endure varying weather conditions and heavy traffic. Here’s why hot rubberized sealant excels:

  • Flexibility: It expands and contracts with temperature changes without compromising its integrity.
  • Adhesion: It bonds exceptionally well to asphalt, ensuring a long-lasting repair.
  • Durability: It is resistant to water penetration and degradation from UV rays.

Standards for Crack Sealing

Following industry norms is essential for success crack sealing. Essential standards to consider include:

  • ASTM D6690: This standard outlines hot-applied, single-component joint and crack sealants requirements.
  • ASTM D5078: It covers the specifications for asphalt crack sealants.
  • FHWA-RD-99-147: This resource offers guidelines for selecting crack sealing treatments.
  • These standards guarantee that both the materials and the application methods meet the required performance criteria for durability and effectiveness.

Guidelines and Recommendations for Effective Hot Crack Repair

To attain optimal outcomes in hot crack repair, adhere to these guidelines:

1. Thorough Surface Preparation: Guarantee that the crack and its surroundings are free from debris and moisture. Contaminants may hinder the proper adhesion of the sealant.

2. Precise Application Methods: Utilize a premium hot-applied sealant and apply it at the recommended temperature. Improper heating can affect the sealant’s efficacy.

3. Quality Assurance Procedures: Conduct routine equipment inspections to ensure proper functionality. Monitor the application process to maintain consistency in sealant application.

6 Best Practices for Hot Crack Repair

1. Timely Maintenance: Swiftly address cracks to prevent their expansion and mitigate further damage.

2. Opt for Premium Materials: Invest in top-quality hot rubberized sealants that adhere to industry standards.

3. Utilize Specialized Equipment: Employ dedicated machinery tailored for hot crack repair to ensure superior outcomes.

4. Skilled Technicians: Ensure technicians are adequately trained in crack sealing techniques and adhere to safety protocols.

5. Weather Awareness: Schedule repairs during favorable weather conditions—preferably when the pavement is dry and temperatures are moderate.

6. Consistent Maintenance: Establish a regular maintenance regimen to inspect and repair cracks systematically, averting minor issues from escalating into significant concerns.


Fixing cracks in hot asphalt is essential for making the roads last longer. If you carefully follow the proper steps and use suitable materials, you can ensure the repairs will last a long time. Preparing the surface well, using the best materials, and applying them correctly for the best results is crucial. Regular maintenance and quick repairs to problems will save you time and money in the long run.

Hot crack repair makes the roads look better and safer and helps them last longer. It’s a smart choice for taking care of asphalt roads.

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