DERBIGUM has more than 85 years of expertise. The story began in 1932 with the creation of Imperbel, a family business located in Lot, south of Brussels, Belgium, which produced a waterproofing joint.

Some milestones in the history of Derbigum, named Imperbel when it was founded.
  • 1932

    The founder members Francis Blake and Agnan de Goussencourt start the production of a waterproofing paste for roofs. The family company Imperbel is born.
  • 1973

    The company imports a first quality membrane from Italy : Derbigum, its high technology is a revolution in the waterproofing industry. At the same time, the “PERFORMANCE” concept is launched, offering various services to roofers, enabling them to gain a high level of satisfaction among its end users.
  • 1978

    In partnership with other European partners, Imperbel starts a Derbigum plant in Perwez. This production unit aims at optimizing and industrializing the membrane and its production. Four years later, the company acquires a controlling share in the factory.
  • 2010

    In 2010 Derbigum takes its recycling policy a step further. The company develops together with its distributors a unique system for cutting waste and for roof waste.
  • 2012

    Derbigum integrates synthetic membranes in their range. Thanks to high polymer EVA/VC terpolymer roofing membranes, new perspectives for the further growth of Derbigum in Europe are visible.
  • 2016

    Derbigum’s presence on the South-African market is expanded and made permanent by the take-over of Tanaprox in Johannesburg. The activities are continued under the name of Derbit® South-Africa.
  • 2017

    On 16 February, the Board of Directors approved the investment of € 4.5 million for a new production line in Perwez. This investment fits well with the group's objective to focus on the development of the bitumen business, both in Europe and in export markets. The new line will also enable the Group to respond more effectively to customer and market expectations.
  • 2019

    Derbigum is investing in the construction of a new, more efficient and modern production line. It also continues to invest in the circular economy with the construction of a 3rd recycling unit.
  • 2020

    Launching of the "No Roof To Waste" program for a more circular future.