Tarmacadam – what’s the crack?

Tarmacadam - what's the crack?

How is it that cracks always seem to appear from out of nowhere and always at the dead of night so that they are there, silently waiting for us in the morning? Cracks in tarmacadam can be relatively easily explained, and they occur for a number of reasons. Reasons which can often be identified by the shape and direction of the crack itself if you only know what you are looking for.

So if you look out of your window one sunny morning and suddenly notice what looks like a fault line snaking down your once-perfect drive then it is worth taking a closer look. The pattern of cracking can be a clear indicator as to the cause of the crack in the first place and knowing the cause enables effective, intelligent asphalt repair.

Types of tarmacadam damage and likely causes – what to look out for:

  • Reflective Cracking – a straight line crack through the tarmacadam often caused by cement being used in the foundation layers.
  • Block Cracking – cracks that split your driveway into block-like sections as a result of underlying layers not being properly compacted.
  • Crocodile Cracking – resembling crocodile skin patterning as a result of poor quality or water-saturated under-layers.
  • Thermal Cracking – due to contraction of the tarmacadam as temperatures drop and the layers underneath cannot absorb the pressure of the shrinking movement.
  • Edge Cracking – When the edges of a driveway are not compacted to the same standard as the main centre they can start to fall away over time.

If you can identify the root cause of your tarmacadam headache then you can ensure that cracking up is not a repeat experience. Ensure that you choose tough, durable, tarmacadam that gives you a safe, high-quality, long-lasting driveway and peace of mind for years to come.