The J.Gg. DÖRR roofing felt factory was founded in Nürnberg by Johann Georg Dörr.
J.Gg.DÖRR is established as an independent Austrian company and opens the plant in Innsbruck.
CEO Werner Bäumler takes over the company.
With the commissioning of the most modern roofing membrane manufacturing plant at the time a more industrial and efficient production is possible.
The setbacks suffered during the war are compensated by enhancements and improvements to the plant.
The company J.Gg. DÖRR succeed as the first manufacturer to manufacture a polymer modified bitumen membrane which under the name of "Ultra Plast" comes on the market.
Gerhard Bäumler takes over as managing director of the DÖRR Group.
Expanding of the product range by including the product group "Insulation". At the same time the creation of the EMFA-insulation division to market organic insulation materials is done.
Opening of the branch office in Upper Austria (Marchtrenk).
Peter Bäumler takes over as managing partner
Start of the newly constructed, then most modern bitumen sheets production plant.
Opening of the branch office in Graz.
Opening of the branch office in Vienna (Wiener Neudorf).
Implementation of a quality management system according to: ISO 9001, ISO 14001, EMAS certification and SCC standard.
Full automation of the production plant and extension of the cooling section.
Expansion of the product range by start manufacturing bitumen used for roads.
Expansion of office space at the headquarters in Innsbruck.
Opening of the new logistics building and implementation of the new logistics concept in Innsbruck.
Opening of the new branch office in Vienna (Wiener Neudorf).
Anniversary - 150 years Bitbau DÖRR.
Sika AG, a global specialty chemicals company, overtakes Bitbau DÖRR, and intends to establish in Innsbruck a competence center for bitumen waterproofing systems within the Sika Group for Central Europe.