Lagan Group


Whitemountain is a market–leading Lagan business with a range of core activities. For over 50 years, we have been involved in quarrying. But, over time, our operations have diversified and grown to meet customer demands and market opportunities.


Based in Northern Ireland, we have built a strong global reputation and we work with contractors across Europe.

Our core activities include:

  • Aggregates production
  • Asphalt production
  • Road surfacing
  • Specialist highway maintenance (including road marking)
  • Airfield surfacing and maintenance
  • Bitumen distribution 

Building the future

We are continually looking to exceed customer expectations – whether that’s through our products or our service. We have implemented an Integrated Management System (ISO) based on all relevant legislation, regulations and industry–based best practice. We adhere to an ISO 9001 Quality Management System and are continually looking to improve our quality assurance and product compliance processes whilst following the highest standards of environmental sustainability. 

We pride ourselves on building positive, long–term relationships with our clients, who can always rely on our attentive service and dedication to delivering their project successfully. 


For more information, please visit our website.