Asphalt surfaces are constantly exposed to weather, traffic, and natural aging, which can lead to the development of cracks over time. Left untreated, these cracks allow water, debris, and chemicals to penetrate the surface, accelerating deterioration and leading to costly repairs. One of the most effective ways to preserve the longevity of your asphalt is through crack sealing. This simple yet powerful maintenance step helps protect your pavement, preventing minor cracks from turning into major damage. Andersen Asphalt & Striping would like to explore how crack sealing works, its benefits, and why it’s essential for extending the life of your asphalt surface.

Why Do Asphalt Cracks Form?

Cracks in asphalt develop due to various factors, including:
• Weather Conditions: Freeze-thaw cycles, heat expansion, and moisture cause asphalt to contract and expand.
• Heavy Traffic: Constant vehicle weight puts stress on asphalt, leading to wear and cracks.
• Poor Drainage: Standing water seeps into cracks, weakening the pavement foundation.
• UV Exposure: Sunlight causes asphalt to dry out, become brittle, and crack.
• Aging Asphalt: Over time, asphalt naturally loses flexibility, making it more prone to cracking.
Without timely maintenance, small cracks can grow wider and deeper, leading to potholes, uneven surfaces, and costly resurfacing or replacement.

How Crack Sealing Helps Protect Your Asphalt

Prevents Water Damage & Erosion: Crack sealing acts as a protective barrier, preventing water from penetrating the asphalt. When water seeps into cracks, it reaches the subbase, leading to erosion, soft spots, and pavement failure. By sealing cracks early, you reduce the risk of expensive structural damage.
Slows Down Asphalt Deterioration: Cracks allow oxygen and UV rays to break down asphalt binders, making the pavement brittle and prone to more cracks. Sealants create a flexible, waterproof seal, helping the asphalt maintain its strength and flexibility for a longer time.
Reduces the Formation of Potholes: Potholes form when water enters cracks, freezes, and expands, weakening the surrounding pavement. Crack sealing stops this cycle by blocking moisture before it causes significant damage, reducing the likelihood of potholes forming.
Saves Money on Costly Repairs: Regular crack sealing is far more affordable than major asphalt repairs or resurfacing. It extends the time between major repaving projects, helping you save thousands of dollars on unnecessary repairs and replacements.
• Cost of Crack Sealing: Low-cost, preventative maintenance
• Cost of Neglecting Cracks: Leads to expensive repaving or full replacement
Enhances Safety & Appearance: Cracked asphalt is not only unsightly but also poses safety hazards for pedestrians, cyclists, and vehicles. Crack sealing:
• Creates a smoother, safer surface
• Reduces trip hazards for pedestrians
• Improves the curb appeal of residential and commercial properties
Increases the Longevity of Sealcoating & Pavement Life: If you plan on sealcoating your asphalt, crack sealing is a crucial first step. Sealing cracks before applying sealcoat ensures that moisture and debris won’t get trapped under the new layer, making the sealcoating last longer and perform better. With regular crack sealing, asphalt surfaces can last 25% to 30% longer, delaying the need for costly resurfacing or full pavement replacement.