Asphalt pavements are a common feature in many New Zealand homes, providing a durable and smooth surface for driveways, vehicle crossings, and other outdoor features. Known for their resilience and aesthetic appeal, these pavements are designed to withstand heavy use and harsh weather conditions. However, over time, even the most well-constructed asphalt surfaces can begin to show signs of wear. Elemental damage from UV exposure, rain seepage, and temperature fluctuations, coupled with regular use, can gradually lead to various issues that compromise both the appearance and functionality of the pavement.
When these issues arise, it's crucial to address them promptly to maintain the longevity and integrity of the pavement. While some minor problems, such as small cracks or surface fading, can be managed with simple DIY solutions, other more complex issues may require the expertise of professional asphalters like Asphalt Services Ltd. If you reside in Dunedin or Otago in New Zealand, you can count on us for reliable asphalt services. Additionally, knowing which problems you can handle on your own and which ones need professional attention is key to preventing more extensive damage and costly repairs.
Now, let’s explore the most common asphalt pavement issues you may encounter as a New Zealand homeowner. We’ll provide guidance on how to best address them and how to determine when professional assistance is necessary.
1. Cracks
Cracks in asphalt pavement are among the most common issues and the first signs of asphalt fatigue. While they can start small, cracks can quickly spread if not attended to. These cracks can also vary in appearance, from fine hairline fractures that spider across the surface to deeper, more pronounced fissures that break apart the pavement’s continuity.
Cracks often emerge as a result of weathering, where the constant cycle of heating and cooling causes the pavement to expand and contract. Poor initial installation, heavy traffic, and inadequate drainage can also exacerbate these issues, which can lead to visible splits in the surface over time.
If the cracks are minor, applying a sealant can effectively prevent water from seeping in and causing further damage. However, larger or more extensive cracks may require patching, which involves filling the gaps with asphalt or similar material to restore the pavement's integrity. Also, the size and depth of the cracks should be observed over time. When they become too wide and deep or appear in multiple areas, it’s time to call a professional. An asphalt paving contractor can evaluate the extent of the damage, determine the underlying causes, and apply a long-term fix, such as resurfacing, to prevent further deterioration.
2. Potholes
Potholes are the bane of any pavement’s existence, as they’re unsightly, hazardous, and often a sign of deeper underlying issues. These gaping holes form when the pavement crumbles away, leaving behind a cavity that can grow larger with each passing day. Typically, potholes develop after cracks are left unchecked. This allows water to infiltrate the pavement. The cold-hot cycles common in many parts of New Zealand also cause the water to expand and contract, which can further weaken the structure until chunks of asphalt break away and create a pothole.
The most common way to fix potholes is patching, where the hole is filled with hot or cold asphalt mix. However, this is just a temporary fix. For a more permanent solution, a full-depth repair is recommended. This involves removing the damaged area and laying new asphalt. You’ll need to consult a professional asphalt services contractor for this. They can provide a thorough repair that fills the hole and addresses the root cause to prevent future occurrences.
3. Ravelling
Ravelling is another common asphalt pavement issue. It’s the slow disintegration of the asphalt surface, similar to the peeling of paint on an old house. Ravelling usually starts with small particles coming loose from the surface. When the issue isn’t addressed promptly, it can lead to a rough and uneven texture that can make the pavement look neglected and feel unsafe.
To prevent this from happening, apply surface sealing at the first sign of ravelling. This can help lock in the remaining aggregate and protect the pavement from further wear. In more severe cases, an overlay or even resurfacing may be necessary to restore the pavement to its former smoothness. You can hire an asphalt paving contractor like Asphalt Services Ltd. for this. Another sign you need professional help is when ravelling becomes widespread or starts affecting the pavement’s structural integrity.
4. Depressions and Rutting
Another common asphalt pavement issue is depressions and rutting. These are the low spots or grooves that develop over time, which make the surface uneven and prone to water pooling. Often, these issues stem from poor subgrade preparation, where the foundation beneath the asphalt isn’t strong enough to support the loads placed on it. Heavy vehicles, repeated traffic, and water infiltration can also cause the pavement to compact unevenly and lead to these unsightly deformations.
To address depressions and rutting, the affected areas may need to be milled down before they are resurfaced to create a level surface. If depressions or rutting are significant or recurring, professional intervention is necessary. Expert asphalters can diagnose the root cause, which is often related to subgrade issues, and provide a long-lasting solution that prevents further damage.
As a homeowner, understanding these common asphalt pavement issues and recognising when to call in the experts can save you time, money, and stress. It also ensures your pavement remains in top condition for years to come. If the asphalt pavement issue goes beyond DIY solutions, contact Asphalt Services Ltd., and our professional asphalt paving contractors will help address the problem. From driveways and vehicle crossings to car parks and other outdoor spaces, we can help you get durable and visually appealing results. Contact us today via this website or call 03 477 2825 or 027 432 7631.
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