SIG plc is engaged in the supply of specialist products to construction and related markets in the United Kingdom, Ireland and Mainland Europe. Its products supplied are insulation and energy management, exteriors and interiors. As of December 31, 2011, SIG operated from 715 trading sites across the United Kingdom and Ireland and Mainland Europe. In the United Kingdom, it also installs loft and cavity wall insulation in residential properties through its energy management business. Its exteriors division supplies products for pitched, flat, industrial and agricultural applications sourced from the manufacturers of roofing materials. In addition, SIG supplies a range of photovoltaic products in France, Germany and the United Kingdom. In June 2011, it sold its Safety and Workwear business to Bunzl plc. In July 2011, the Company sold Interiors manufacturing business to Laidlaw Interiors Group.