Spray and seal bitumen is a popular and highly effective method for resurfacing roads, driveways, and commercial surfaces, providing a durable and weather-resistant layer that protects and prolongs the life of the surface. However, like any surfacing technique, spray and seal bitumen can sometimes encounter issues. Identifying and troubleshooting these problems early is crucial to ensuring that the surface remains functional and long-lasting. At Dalby Surfacing Solutions, we specialise in providing professional bitumen services, and in this post, we’ll address some common issues and how to resolve them.
1. Uneven Surface or Pooling Water
An uneven surface or water pooling can occur if the underlying layer was not properly levelled before the bitumen was applied. Water that collects in low spots can lead to early surface degradation and cracking, reducing the longevity of the bitumen.
Solution:
Proper preparation of the base layer is critical to ensuring a smooth surface. At Dalby Surfacing Solutions, we ensure that the area is thoroughly graded and compacted before applying the bitumen. If pooling water becomes an issue after installation, resurfacing or targeted repairs may be required to correct the grade and improve drainage.
2. Cracking or Alligator Cracks
Cracks, particularly alligator cracks (a pattern resembling the skin of an alligator), are often a sign of underlying issues with the base layer. This could be due to poor compaction, inadequate load-bearing capacity, or water damage. Cracking compromises the integrity of the bitumen and can lead to further deterioration.
Solution:
Cracks should be addressed as soon as they appear to prevent them from spreading. Crack sealing or patch repairs can restore the integrity of the surface. If alligator cracking is present, the issue likely stems from a deeper problem with the base, and resurfacing may be necessary. Our team at Dalby Surfacing Solutions can assess the damage and recommend the appropriate solution.
3. Surface Wear and Aggregate Loss
Spray and seal bitumen involves applying an aggregate layer over the bitumen. Over time, if the bitumen doesn’t bond well to the aggregate, the surface may experience wear, with aggregate loss leading to a rough or uneven finish. This can be due to weathering, heavy traffic, or incorrect application during the initial process.
Solution:
To address aggregate loss, the surface can be resealed by applying another layer of bitumen and aggregate. This will restore the protective layer and improve the surface’s appearance and durability. Regular maintenance is key to preventing excessive wear.
4. Stripping or Peeling Bitumen
Bitumen stripping or peeling typically occurs when moisture becomes trapped between the base layer and the bitumen. This can happen if the surface wasn’t properly dried or if there’s an issue with water drainage. The trapped moisture can weaken the bond between the bitumen and the surface, causing it to peel away.
Solution:
Preventing moisture infiltration is essential to maintaining the longevity of spray and seal bitumen surfaces. If stripping occurs, the affected areas need to be repaired, and improvements to drainage may be required to prevent the issue from recurring. Dalby Surfacing Solutions takes extra care to ensure the surface is dry and adequately prepared before bitumen application.
5. Loose Stones on the Surface
Loose stones are a common issue, particularly in the initial days following the spray and seal process. While it’s normal to have some loose aggregate, excessive amounts can create a hazard and indicate that the bitumen wasn’t properly bonded to the aggregate.
Solution:
A second pass with a roller can help compact the aggregate further, reducing the amount of loose stone. For long-term prevention, ensuring that the correct amount of bitumen is applied and that it’s done in the right weather conditions is key. If the problem persists, a follow-up application of bitumen may be necessary to improve bonding.
Conclusion
While spray and seal bitumen is a durable and reliable surfacing solution, it’s important to be aware of common issues that can arise. By addressing problems early, you can extend the lifespan of your bitumen surface and ensure it remains in top condition. At Dalby Surfacing Solutions, we’re committed to providing high-quality bitumen services and ongoing support to ensure your surfaces perform as expected.
If you’re experiencing any issues with your spray and seal bitumen surface, or if you’re considering a new project, contact Dalby Surfacing Solutions today. Our expert team is ready to provide tailored solutions to keep your surfaces safe, functional, and long-lasting.
Call us on: 07 4158 7474
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