SIG currently operates from about 750 trading sites across Europe, employing about 12,000 staff. Its core business sectors are insulation and energy management, interior fit-out and roofing.
The company traces its roots back to 1957 when its first insulation distribution branch opened in Sheffield as Sheffield Insulations Limited.
In 1989 it listed on the London Stock Exchange as Sheffield Insulations Group with 30 branches.
In 1994 SIG bought Freeman Group, the second-largest insulation distributor in the UK with operations in France.
During the 15 years its European expansion took it to Germany, the Netherlands, Belgium, Austria, the Czech Republic, Slovakia, Poland, Hungary, Turkey, Romania and Bulgaria.