SigmaRoc plc (SigmaRoc), formerly Messaging International plc, is a United Kingdom-based company that pursues a buy-and-build strategy in construction materials in the European market. The Company invests in and operates construction material assets. It seeks to create value by purchasing assets in fragmented construction materials markets and extracting efficiencies through active management and by forming the assets into larger groups. It targets both the up and down stream heavy construction materials sectors, such as operating assets, value added products and services, associated infrastructure and supply chain. Its subsidiaries include Ronez Limited, supplier of building materials and services in the Channel Islands; SigmaPPG, which has locations in London, the Midlands and the east of England, trading through its entities of Topcrete, and Poundfield Products Ltd.