10 Best Blacktop Driveway Sealants 2025 in the United States

The Sikaflex-410 Asphalt Sealant is a self-leveling hybrid sealant designed for filling cracks in asphalt driveways, roadways, and pavements. It stands out for its ability to fill cracks up to 1.5 inches wide and its fast skin time of less than an hour, making it a convenient option for quick repairs. The self-leveling feature simplifies application, ensuring a smooth finish without the need for extensive effort or skills, which is a significant advantage for non-professional users.

Its excellent adhesion to both asphalt and concrete means it can be used in various scenarios, including bonding asphalt to concrete joints. Durability is another strong point, with the sealant resisting aging and weathering, and remaining permanently elastic, which helps it withstand the stresses of temperature fluctuations and traffic over time.

However, since the product comes in a compact 9-ounce cartridge, it may not be ideal for large-scale projects or extensive driveway coverage without purchasing multiple cartridges. Additionally, while its self-leveling nature is beneficial, it may not be as effective on very steep surfaces where gravity could affect the leveling process. In summary, the Sikaflex-410 Asphalt Sealant is a durable, easy-to-apply option for homeowners looking to make quick and effective repairs to their asphalt driveways, with the caveat that it may require multiple cartridges for larger areas.

The Bluestar Flexible Asphalt Crack Filler is a latex-based sealant designed for DIY use, promising ease of application with no need for special tools. It's particularly useful for filling cracks up to one inch wide in asphalt driveways and parking lots, which helps to prevent further damage.

The sealant is praised for its flexibility in both hot and cold weather, which can extend its durability and performance in various climates. Additionally, being made in the U.S.A. might appeal to those looking for domestically produced products.

Its compact size ensures convenience for home storage but may require multiple bottles for substantial repair work. Ideal for homeowners needing a quick and easy solution for minor asphalt cracks, the Bluestar Flexible Asphalt Crack Filler scores well on ease of application and weather resistance but may fall short in terms of coverage area for larger projects.