SIG plc supplies specialist insulation and sustainable building products and solutions in the United Kingdom, Germany, France, Benelux, Poland, and Ireland. The company offers insulation and interiors products, including structural and technical insulations, construction accessories and fixings, cladding and façade systems, dry lining, ceiling tiles and grids, partition walls and door sets, and floor coverings, as well as accessories, including tools and fixings, ventilation, access equipment, and safety products. The company also provides roofing and exterior products comprising tiles, slates, membranes, battens for pitched roofs, single-ply flat roof systems, industrial roofing products, cladding systems, room-in-roof panel systems, and photovoltaic panels, as well as industrial painting, coating, and repair services. It serves developers, specialist contractors, specialist installers, and independent merchants. The company was formerly known as Sheffield Insulations Limited. SIG plc was founded in 1957 and is based in Sheffield, the United Kingdom.