Cracks in Tarmac: Causes, Solutions, and Prevention

A cracked tarmac driveway might seem like a cosmetic concern at first glance, but left untreated, it can quickly escalate into something far more costly and damaging. At Bury St Edmunds Driveway Solutions, we’ve seen how early intervention and informed maintenance can make all the difference. Whether you’re dealing with minor surface issues or deep structural damage, understanding what causes cracks in tarmac—and how to tackle them—is the first step to a lasting solution.

What Causes Tarmac to Crack?

Tarmac, while durable and cost-effective, isn’t immune to environmental and structural pressures. Here are some common culprits behind cracking:

• Weathering: The freeze-thaw cycle during colder months causes expansion and contraction that weakens the surface.
  
• Heavy Loads: Frequent use by large vehicles or equipment can stress the surface beyond its limits.
  
• Poor Installation: Inadequate foundations or substandard materials lead to early deterioration.
  
• Water Infiltration: Rainwater seeping into small cracks and washing away the base layer accelerates surface break-up.
  
• UV Exposure: Prolonged sun exposure dries out the bitumen, making it brittle and more prone to cracking.
  

Solutions for Cracked Tarmac

Not all cracks spell disaster—many can be dealt with efficiently when caught early. Here’s what can be done:

• Crack Sealing: Ideal for hairline fractures. A rubberised filler is applied to seal the gap and prevent water ingress.
  
• Patching: Larger cracks or small potholes may require the affected area to be cut out and replaced.
  
• Resurfacing: If the surface is riddled with cracks, a fresh layer of tarmac can be laid over the existing base (if the base is sound).
  
• Full Replacement: When damage runs deep, it’s often more cost-effective in the long run to start from scratch.
  

How to Prevent Future Cracks

Preventative care is the best kind of care. Here’s how to prolong the life of your tarmac driveway:

• Sealcoating: Apply a protective seal every few years to guard against UV rays and moisture.
  
• Prompt Repairs: Don’t ignore small cracks—they grow!
  
• Good Drainage: Ensure water flows away from the driveway rather than sitting on the surface.
  
• Regular Inspections: Seasonal checks can catch issues before they worsen.
  
• Weight Management: Avoid parking heavy vehicles in the same spot for long periods.
  

Conclusion

Cracks in tarmac don’t have to spell the end for your driveway. With timely attention and expert care, they can be repaired effectively—or avoided altogether. At Bury St Edmunds Driveway Solutions, we help homeowners protect their investment with reliable, long-lasting solutions. If your tarmac is showing signs of wear, don’t wait for it to get worse. Contact us today and let us restore your driveway to its best condition.

Call us on: 01284 331 496
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