Stone- and fine plasters are characteristic of a variety of construction types from the early 20th Century. In order to improve established solutions for the repair of flaws, the backfilling of gaps and cracks, but also for the removal of manmade environmentally-induced damaging salts such as gypsum, the Institut für Bauforschung und Bauerhaltung (IBB) of the University of Applied Sciences of Potsdam conducted fundamental investigations on conservation- and remediation technologies. The IBB was supported in this undertaking by numerous cooperating partners, among them the firm Winfried Brenne Architects of Berlin.
The following measures and conservation technologies were tested:
As a result of analysis of the existing plaster it was possible to successfully create a new mixture of fine- and stone plaster under laboratory conditions. Laboratory and field attempts at surface cleaning and the removal of coatings, however, yielded no generally applicable answer. The experiment’s results nonetheless offer valuable experience toward the identification of individual solutions. Since 77 % of all newly-plastered structures in Germany between 1925 and 1930 were finished with fine plaster, the findings are highly relevant.
Project operation
Fachhochschule Potsdam, Institut für Bauforschung und Bauerhaltung
Pappelallee 8 ‑ 9
14469 Potsdam
wkoch@fh-potsdam.de
www.fh-potsdam.de
26503
