| 2007 | New-built factory in Istria, Croatia |
| 2005 | New-built factory in Vyborg, Russia |
| 2003 | Launch of the consultancy service BuildDesk |
| 2003 | Acquisition of factory in Tapolca, Hungary |
| 2000 | Acquisition of factory in Melaka, Malaysia |
| 2000 | New-built factory in Caparroso, Spain |
| 1999 | Acquisition of factory in Grand Forks, Canada |
| 1999 | Acquisition of factory in Sardinia, Italy |
| 1999 | Acquisition of Russia’s largest stone wool factory, located near Moscow |
| 1998 | Acquisition of factory in Bohumin, Czech Republic |
| 1997 | Acquisition of factory in Gógánfa, Hungary |
| 1995 | Acquisition of factory in Malkinia, Poland |
| 1993 | Acquisition of Poland’s largest stone wool factory, located in Cigacice |
| 1991 | Establishment in Eastern Europe: Acquisition in Flechtingen, the largest stone wool factory in the former East Germany |
| 1988 | Acquisition of the first factory outside Europe in Ontario, Canada and Roxul Inc. is established |
| 1985 | Rockpanel façade panels are introduced |
| 1980 | New-built factory in St. Eloy-les-Mines, France |
| 1979 | New-built factory in Wales, United Kingdom |
| 1971 | Acquisition of factory in Roermond, the Netherlands - today the world’s largest stone wool factory |
| 1969 | Grodan horticultural substrates are added to the product range |
| 1962 | Rockfon acoustic ceilings are introduced |
| 1954 | Deutsche Rockwool starts production in Gladbeck, Germany |
| 1938 | Start of production in Norway |
| 1937 | Stone wool production is started in Hedehusene, Denmark and Skövde, Sweden |
