What is the Difference Between Asphalt Crack Filling vs Crack Sealing?
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Maintaining asphalt surfaces is one of the best ways to extend their lifespan and avoid costly repairs. Two of the most common maintenance services are crack filling and crack sealing. While these terms are often used interchangeably, they are not the same. Each method has a unique purpose, uses different materials, and works best under specific conditions. If you’ve ever wondered about the difference between crack filling vs crack sealing, this guide breaks down everything you need to know to make the right choice for your driveway, parking lot, or roadway.
What is Crack Filling?
Before we can answer this, we first must explain what working vs non-working cracks are. Non-working cracks are relatively stable. They don’t expand or contract much with changes in weather, traffic, or ground shifting. Because of their minimal movement, they’re best treated with crack filling, which plugs the opening to keep out water and debris and helps preserve the surrounding pavement. In short, non-working cracks stay still and can be filled.
Crack filling is the process of placing asphalt emulsion, rubberized filler, or other material directly into non-working cracks, which are those that show little to no movement. These are usually block cracks, longitudinal cracks, or other shallow surface breaks that develop as pavement ages. By filling these gaps, water, dirt, and debris are prevented from seeping beneath the surface, which reduces the risk of larger structural damage.
Crack filling is typically a cost-effective, short-term maintenance solution. It is best suited for asphalt with several small cracks, provided it is still in fair overall condition. The process helps smooth the surface, prevent potholes from forming, and extend the life of the pavement without needing full resurfacing. For homeowners and businesses alike, this makes crack filling a practical option when you want to preserve curb appeal and delay costly repairs.
What is Crack Sealing?
In comparison, crack sealing is the repair method we use for ‘working cracks.’ Working cracks are active and prone to movement. They expand and contract significantly with temperature changes, heavy loads, or ground settlement. For these cracks, crack sealing is the more effective solution since it uses flexible materials that can stretch and contract along with the pavement.
Crack sealing is a more durable and flexible approach used for “working cracks”, which are cracks that expand and contract due to temperature changes and traffic loads. Instead of filler, a hot rubberized sealant is applied that remains elastic over time. This allows it to move with the pavement as it shifts, ensuring that the crack stays sealed regardless of weather conditions.
Because crack sealing uses a higher-grade material and provides a longer-lasting barrier, it is commonly chosen for heavily trafficked surfaces like commercial parking lots, roadways, and industrial facilities. Crack sealing minimizes water penetration, reduces the risk of potholes, and helps protect the pavement foundation from damage. When combined with regular sealcoating, crack sealing can dramatically extend the overall lifespan of your asphalt surfaces, making it a smart long-term investment for both residential and commercial properties.
Crack Filling vs Crack Sealing: Key Differences
Although they sound similar, crack filling and crack sealing are different in both application and results. The differences come down to the type of cracks being treated, the materials used, durability, and cost-effectiveness. Understanding these distinctions can help you choose the most effective solution for your asphalt pavement.
Materials Used – Crack filling uses a thicker asphalt-based filler, while crack sealing uses flexible, rubberized sealant.
Cracks Treated – Filling is used for non-working cracks, while sealing is used for working cracks that expand and contract.
Durability – Crack filling generally lasts 1–3 years, while sealing can last up to 7 years or more with proper maintenance.
Cost – Filling is more affordable up front, but sealing provides greater long-term value.
Application – Filling is a quick and straightforward process, while sealing requires heating and applying specialized sealant for maximum effectiveness.
The difference between crack filling vs crack sealing comes down mainly to the type of crack present (working vs non-working), cost, and longevity.
Which Option is Right for Your Asphalt Pavement?
Deciding between crack filling and sealing depends on your pavement’s condition and usage. If your asphalt has small, non-expanding cracks and you’re looking for a quick fix, crack filling may be the right choice. On the other hand, if your pavement experiences high traffic or large temperature swings, crack sealing offers a more durable, protective solution.
For example, homeowners may choose crack filling for driveways showing surface wear. In contrast, commercial property managers often choose sealing for parking lots that experience constant traffic and need long-term protection. The best option will depend on whether you’re focused on immediate cost savings or long-term pavement preservation.
Professional Asphalt Crack Repair in Atlanta, GA
Whether your property needs crack filling, crack sealing, or a combination of both, working with a trusted contractor ensures the job is done right. A&A Asphalt Paving has decades of experience protecting driveways, parking lots, and other paved surfaces across Atlanta. We use proven techniques and high-quality materials to maximize durability and extend the life of your pavement. We can assess your pavement and help you determine if your cracks should be filled vs sealed.
Don’t wait until small cracks turn into costly repairs. Contact A&A Asphalt Paving today to schedule a complimentary consultation for crack filling and crack sealing in Atlanta, GA.