Asphalt is one of the most durable and reliable paving materials used for driveways, parking lots, and roads. However, even the strongest asphalt surface can be vulnerable to one of its biggest enemies, water. Over time, water infiltration can cause serious damage to asphalt, leading to cracks, potholes, and costly repairs. Sealcoating provides an effective way to protect your pavement from water damage and extend its lifespan. Andersen Asphalt & Striping would like to explore how water affects asphalt and how sealcoating helps preserve your investment.
How Water Damages Asphalt
Asphalt is a mixture of aggregates like stone and sand bound together by asphalt cement. While it may look solid, it is actually very porous, which means water can seep into the surface if left unprotected. Here is what happens when moisture takes over.
Erosion of the Surface: When rainwater or irrigation runoff sits on the pavement, it can slowly erode the top layer, washing away fine materials and weakening the surface.
Crack Formation: As water penetrates the surface and temperature, changes occur. The expansion and contraction cause the pavement to crack. Over time, these cracks widen and deepen, allowing even more water to enter.
Freeze-Thaw Damage: In colder climates, trapped water freezes and expands inside cracks. When it thaws, it leaves behind larger gaps and weak spots, a process that repeats throughout winter and leads to potholes and surface crumbling.
Base Layer Weakening: Water that seeps deep into the asphalt can reach the base layer, which supports the entire pavement structure. Once the base weakens, the asphalt begins to sag, form depressions, and eventually break apart.
How Sealcoating Protects Against Water Damage
Sealcoating is your pavement’s first line of defense against water intrusion. It creates a waterproof barrier that prevents moisture from soaking into the asphalt and causing damage. Here’s how it helps.
Prevents Water Penetration: Sealcoating fills small surface voids and seals hairline cracks, blocking water from seeping in and reaching the base layer.
Enhances Surface Smoothness: By creating a smooth, uniform surface, sealcoating helps water run off rather than puddle, reducing the risk of standing water and erosion.
Protects Against Chemical Spills: In addition to water, sealcoating also protects against oil, gas, and de-icing chemicals that can accelerate pavement breakdown and increase water absorption.
Extends Pavement Life: With proper maintenance and regular sealcoating every 2 to 3 years, your asphalt can last up to twice as long compared to unsealed pavement.
Preventing Water Damage: Maintenance Tips
To keep your asphalt in top condition, follow these best practices:
• Sealcoat every 2 to 3 years to maintain a strong waterproof barrier.
• Fill cracks and repair potholes promptly before water has a chance to spread damage.
• Keep your pavement clean and clear of debris that traps moisture.
• Ensure proper drainage to avoid standing water on the surface.
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
Water may seem harmless, but over time it can quietly destroy your asphalt surface from the inside out. Regular sealcoating is the most effective way to protect your pavement, prevent costly repairs, and extend its life. Do not wait until cracks and potholes appear, act early. Contact Andersen Asphalt & Striping and schedule our services today.
