Am Horn house

UNESCO World Heritage Site

Individual facade design with traditional render technique

The Am Horn house was built as a show house for the historic Bauhaus exhibition in 1923 in the city of Weimar. A single-storey residential house was built on an area of 12.70 m x 12.70 m, with rooms grouped around a main room.

The mica-containing mineral classic scratch top coat render 200 of the Terranova company was applied on the facade. The planners chose a grain size of only 1 mm so as to obtain a very fine texture. The smooth white render surface emphasizes the cubic basic form.

In 1999, the architects’ office Wittenberg Architects renovated the building, which was designated a World Heritage Site in 1996. The facade was in remarkably good condition; despite the low roof overhang, there was no algae growth on the mineral render. There was only minor render damage in the splash water area (facade socket part). The reason: for design reasons, the Bauhaus group refrained from creating a socket part. For reasons of monument protection, they stuck with it, so that after just under 15 years, in autumn 2013, minor renovations were due again.

The Terranova successor - Saint-Gobain Weber GmbH - still offers the pre-said render and was pleased to make it available for the authentic renovation of the World Heritage Site.

Building site:
UNESCO World Heritage Site

Project type:
Residential flats, historic building

Facade approx. 140 m²

Completion date:

Staatliches Bauhaus Weimar (1923), Freundeskreis der Bauhaus-Universität Weimar (Sanierung)

Georg Muche und die Architekturabteilung des Bauhauses (1923); Wittenberg Architekten, Weimar

bauhof, Weimar