SigmaRoc PLC is a UK-based, London AIM–listed quarried materials group focused on lime and limestone-based products and related construction materials. The company aggregates and operates specialist platforms across Northern and Western Europe.
Its portfolio spans the extraction and processing of limestone and dolomite; production of quicklime, hydrated lime, and ground calcium carbonate; and manufacture and supply of aggregates, asphalt, ready-mixed concrete, precast products, and dimension stone. Key operating businesses include Nordkalk (a leading Northern European lime and limestone producer), Carrières du Hainaut (Belgian blue limestone), and Ronez (quarrying and construction materials in the Channel Islands), among others.
SigmaRoc serves construction and infrastructure, as well as industrial and environmental markets, including steel and metals, flue-gas treatment, water, pulp and paper, and agriculture. The group emphasizes operational efficiency, resource stewardship, and lower-carbon production pathways in lime and aggregates to support customers’ performance and regulatory objectives.
