Asphalt surfaces are used in driveways, parking lots, and roads for their durability and cost-effectiveness. However, these surfaces are not immune to damage. Elements such as weather conditions, traffic loads, and chemical exposures can degrade asphalt over time. While sealcoating is widely recognized for its protective qualities, there is often confusion about the extent of problems it can address. Andersen Asphalt & Striping would like to put the spotlight on some of the issues that asphalt sealcoating can help repair.
What Sealcoating Does
Sealcoating involves applying a protective sealant to the surface of asphalt pavement to protect it from damage caused by water, oils, ultraviolet rays, and other harmful elements. It acts primarily as a preventative measure, extending the lifespan of asphalt by shielding it from elements that lead to deterioration.
Oxidation & UV Damage to Asphalt
One of the primary benefits of sealcoating is its ability to protect against oxidation caused by exposure to oxygen and UV rays from the sun. UV rays can cause the asphalt binder which is the glue holding the aggregate together to deteriorate, leading to fading and increased brittleness. Sealcoating adds a protective layer that minimizes this exposure, reducing the rate of oxidation and helping maintain the asphalt’s flexibility and color vibrancy.
Asphalt Water Damage
Water penetration is a major cause of asphalt deterioration. It can lead to the erosion of the base material, and during freeze-thaw cycles, trapped water expands, causing cracks and potholes. Sealcoating creates a waterproof barrier that prevents water from seeping into the asphalt, thus mitigating the risk of structural damage.
Minor Surface Cracks
For minor cracks, especially those less than 1/8 inch wide, sealcoating can effectively fill these and restore the surface integrity. This preventive repair helps avoid the formation of larger cracks and potential potholes. However, it’s important to note that deeper or wider cracks require proper filling before sealcoating or seek crack sealing repairs first.
Oil & Chemical Spills
Asphalt surfaces are particularly vulnerable to spills from vehicles, such as oil, gasoline, and chemicals. These substances can break down the asphalt binder, leading to soft spots and eventual surface degradation. Sealcoating resists these chemicals, allowing for easier cleaning and maintenance, and preventing the substances from penetrating deeply into the pavement.
Limitations of Sealcoating Asphalt
While sealcoating is effective for preventive maintenance and repairs, it’s important to recognize its limitations and when to seek asphalt replacement or other repair options:
• Deep Cracks and Potholes: Sealcoating is not a filler for deep cracks or a solution for repairing potholes. These issues require proper patching and repair techniques before sealcoating can be applied.
• Structural Damage: If the foundation of the pavement is compromised, sealcoating will not solve these underlying issues. Structural damages need substantial repairs or even a complete overhaul of the pavement structure.
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
Sealcoating is an important maintenance procedure that extends the life of asphalt pavements and enhances their appearance. It effectively addresses minor cracks, protects against water intrusion, shields the pavement from UV damage, and provides resistance against oil and chemicals. However, it is not a cure-all solution. Understanding the specific capabilities and limitations of sealcoating can help property owners make informed decisions about their pavement maintenance, ensuring that their asphalt investments remain protected and functional for as long as possible. By incorporating sealcoating into regular maintenance schedule, you can maximize the durability and appearance of your asphalt surfaces. For sealcoating and other asphalt services, contact Andersen Asphalt & Striping today.
