our History

A century of evolution

Since the beginning in 1937, the ROCKWOOL Group has developed into a global company operating 28 stone wool factories and 7 other factories on three continents. At present, the Group employs 10,601 highly skilled individuals. However, much has changed since the trademark ROCKWOOL® was registered.

The beginning
It actually all started in 1909, when a building contractor, H.J. Henriksen, and a tile manufacturer, V. Kähler, together founded the company I/S H.J. Henriksen & V. Kähler on a small island in the Great Belt of Denmark. Until 1937 the main activities included digging for gravel, marl, and coal as well as manufacturing tiles.
In 1935 the company acquires the rights to use stone wool production technology throughout Scandinavia and Germany. The price was USD 5,000. 
In 1937 the first stone wool production starts in Denmark, and Sweden and Norway soon follows.

The early years
At the beginning of the 1940s, stone wool production only constitutes a small part of the parent company's turnover, and during World War II stone wool activity is especially low.
However, ever more efficient management and production processes as well as a high degree of attention to research and development paves the way for a gradual expansion of stone wool activities.

In 1954 production starts in Germany as the first factory outside Scandinavia. Further expansion in Europe takes place during the 1960s and 1970s