The history of the Rockwool Group
Subsequent to 1937 when the production commenced in Hedehusene, Denmark, the Rockwool Group experienced increasing growth and development.
1937
The begining of stone wool production in Hedehusene, Danmark and in Skövde, Sweden.
1938
The begining of production in Lärvik, Norway.
1951
Deutsche Rockwool was established,.
1954
Spreading to the vital market: Germany. Rockwool Germany started its production in Gladbeck.
1958
Following the death of the company founder Mr. Gustav Kähler, the management of the family company is continued by his son Claus.
1961
The families Henriksen and Kähler decided to divide the company to two parts. The production of stone wool was under the operation of the family Kähler, while the family Henriksen continued to operate the plants for the sand separation and cement and clinker production. Thus, as of 1 January 1962, the production of stone wool was taken over by the company under the then name of I/S Kahler & Co.
1962
Presentation of the Rockfon acoustic ceilings.
1969
Adding the Grodan horticultural substrates to the production program.
The oil crisis
The 1970s were good years for the Rockwool Group. Due to the oil crisis with rapidly increasing energy prices all over the world many people had their eyes opened to the advantages of insulating their houses. The Rockwool Group experienced an increase in turnover from DKK 360 million in 1970 to DKK 1,6 billion in 1979.
1974
A new production plant, the second in Germany, was built in Neuburg, on Danube, and the production of stone wool started.
1979
The Group built a new production plant in United Kingdom, in Bridgend, Wales.
1980
A new production plant was opened in St. Eloy-les-Mines, France.
1985
Rockwool took over the production plant Hiltrup in Münster, Germany.
1988
A first non-European production plant was taken over: Roxul Inc. in Ontario, Canada.
1991
The Group spread to Eastern European market. Rockwool Germany took over the production plant Flechtingen, the largest stone wool production plant in former East Germany.
1993
Rockwool International A/S formed a joint venture with the largest stone wool production plant in Poland, located in Cigacice, Western Poland.
1995
The Group took over the second production plant in Poland, the one in Malkinia in the Eastern part of the country.
1997
The Group acquired the production plant in Western Hungary in Goganfa.
1998
The Group took over the largest Czech stone wool production plant.
1999
The Group acquired the majority share in the biggest stone wool power plant in Russia, located in the vicinity of Moscow. The construction of the new Spanish power plant in the village of Caparosso, in the region of Navarra commenced, and when in autumn 2000 the production begun, this was the most efficient stone wool power plant in the world. Rockwool International A/S acquired the majority share in the power plant in Cagliari, Sardinia, as well as in the second Canadian power plant in Grand Forks, British Columbia.
2000
In cooperation with the Industrialisation Fund for Developing Countries, the Group took over the first power plant in Far East, in Malacca, Malaysia.
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