Cracks in asphalt are more than just a cosmetic issue. They are the first sign of pavement deterioration. If left untreated, even small cracks can allow water, debris, and chemicals to seep beneath the surface, leading to potholes, base failure, and costly repairs. That is where asphalt crack sealing comes in. It’s one of the most effective and affordable ways to protect your pavement and extend its lifespan. Andersen Asphalt & Striping would like to explain how crack sealing works and why it’s an essential part of asphalt maintenance.
What Is Asphalt Crack Sealing
Asphalt crack sealing is a repair process that involves filling and sealing cracks with a flexible, rubberized sealant. This material expands and contracts with temperature changes, preventing the cracks from reopening and allowing moisture to enter. Unlike simple crack filling, crack sealing is designed for long-term performance, making it ideal for active cracks that continue to expand and contract. Andersen Asphalt will outline how crack sealing works below.
Inspection & Assessment
The process begins with a thorough inspection of the asphalt surface. Professionals identify the type and size of cracks, the severity of the damage and whether crack sealing or a more extensive repair is needed. Crack sealing is best for cracks that are not too large or structurally damaging.
Cleaning the Cracks
Before applying any sealant, the cracks must be completely clean. This step involves removing dirt, debris, and vegetation, using high-pressure air or specialized equipment and ensuring the crack is dry and free of moisture. A clean crack ensures proper adhesion and long-lasting results.
Preparing the Crack
In some cases, cracks are slightly widened or routed to create a uniform shape. This helps the sealant bond more effectively and provides better flexibility.
Applying the Sealant
A hot rubberized sealant is heated and poured or injected into the crack. This material fills the entire crack, bonds tightly to the asphalt and remains flexible to handle expansion and contraction. The sealant is then smoothed to create an even surface.
Cooling & Curing
The sealant cools and hardens within a short period, forming a durable, watertight seal. Once cured, the pavement is ready for normal use.
Why Crack Sealing Is Important
• Prevents Water Damage: Crack sealing blocks moisture from entering the pavement and weakening the base layer.
• Stops Cracks from Spreading: Sealing cracks early prevents them from growing larger and turning into potholes.
• Extends Pavement Life: Regular crack sealing can extend the life of asphalt by several years.
• Saves Money: It’s far more affordable to seal cracks than to repair major damage or replace the pavement.
When Should You Seal Asphalt Cracks
• As soon as cracks appear.
• Typically, every 1 to 2 years for maintenance.
• Before winter or rainy seasons to prevent water infiltration.
The best time for crack sealing is during dry weather when temperatures allow proper bonding.
Asphalt Parking Lot & Road Pavement Resurfacing, Replacement & More in Reno, Elko, Henderson, North LV, Paradise, Spring Valley, Sunrise Manor, Las Vegas, NV | State of Nevada
Asphalt crack sealing is a simple yet highly effective way to protect your pavement from further damage. By sealing cracks early, you prevent water intrusion, reduce repair costs, and extend the life of your asphalt surface. If you have a bunch of cracks developing in your asphalt, contact Andersen Asphalt & Striping today for crack sealing services.
