ETICS With Scratch Plaster

During this renovation, the traditional method was applied to ETICS systems with a high level of competence.

Gut Hochreute is a former agricultural model estate built in 1910, which is now used as the "European Center of the Buddhism Foundation Diamond Way". The architecture office Dietrich / Untertrifaller managed the renovation and expansion as general planner. The converted existing building went into operation in September 2014, and the new building was ready for occupancy in June 2015. The historic scratch plaster on the villa and coach house of the listed Hochreute estate served as the basis for the recipe for the facade plaster.

The exposed foundation of the historic, walled courtyard on the north shore of the Great Alpsee was used by the globally active foundation to create a representative address. The expansion includes accommodation, seminar and economic areas. For this purpose, a new, low-level courtyard wing consisting of a single-storey wing and a two-storey house is being built up the slope, placing the existing farm building at the center of the overall system. The heart of the new sacred and community house is the meditation hall on the wooden upper floor of the house. An oiled plank floor made of trunk-wide oak boards was installed by the client himself. The lining of the inner surfaces in knot-free silver fir gives the hall the right ambience for its new use and still reminds of the former hayloft.

The new function assignment made it possible to preserve the structural characteristics of the column-free space of around 550 square meters with its mighty gable roof and largely closed wooden facade.

Unclad woodwork

Four wide steel stairs (in a glazed extension slid under the rear eaves) ensure short distances in the Hochreute estate. In this way, the room-defining, historic woodwork was also left unclad. The foyer, large kitchen and dining room are located on the ground floor, in the former stable, which was once built in a brick building. The three large rooms fit into the building structure of the listed building. In terms of energy, both the remodeled existing and newly constructed components offer low energy standards, including a ventilation system with highly efficient heat recovery.

Scratch plaster

Massive scratch plasters can be applied to normal plaster and, as here at Gut Hochreute, in existing and new buildings on ETICS systems.

With the solid plaster system, a fabric filler is applied over the insulation. The surface is roughened so that the scratch plaster, applied in four times the grain size, does not slip on the facade surface. A leveling tooth brush must be used to equalize the air to open air pockets. The mineral plaster colored according to the Baumit "Life" color system is stained or scratched after setting with the so-called hedgehog, a nail board or a similar tool. This mechanical treatment removes the hard binder layer on the surface, the plaster relaxes, its surface increases. The plaster looks cleaner and for a long time, because the "precious chalk" allows the detachment of fine particles from the surface. Accumulated dirt is also released together with these fine fractions,the self-cleaning effect keeps the plaster surface fresh for decades. Compared to other plasters, the application volume is higher, which improves the mechanical resilience and the weather protection of the ETICS system.

Construction board

Client: Buddhism Foundation, Immenstadt in the Allgäu

Planning team:

Architecture: Dietrich l Untertrifaller Architects, Bregenz with Prof. Roland Gnaiger

Project management: Günther Prechter

Remodeling of the existing building: plasterer Frank Wall, Wangen im Allgäu

New building: painting company Martin Neuhofer e. K., Immenstadt im Allgäu

Structural engineering and local construction supervision: gbd ZT GmbH, Dornbirn

Building physics: Bernhard Weithas engineering office, Lauterach

Landscape architecture: Barbara Bacher, Linz

www.baumit.de

Walter Bader and Günther Prechter