Collen Bros (Quarries) Ltd has been carrying out asphalt surfacing for over 50 years, from private driveways and footpaths to full road construction, no job is too big or small.

The 3 main surface types are shown below:

• SMA - Stone Mastic Asphalt
  
  
• HRA - Hot Rolled Asphalt
  
  
• AC - Asphalt Concrete (Also known as bitmac or tarmac)