Erich Sattler Winery is located in Tadten, a typical village in the Austrian wine region of Burgenland along the border to Hungary. The winery, located towards the centre of the village was constructed within a 12 x 120 m property alongside an existing L-shaped residential building with a courtyard and public access for pedestrians. At the other end of the property in the direction of the vineyards is the manufacturing and storage facility with a service entrance. In the middle of the property is a new building that is limited by two firewalls. The winery consist of the “winehall” on the ground floor that serves as a storage and processing facility, and the “wineloft” on the upper level that contains presentation space, a guest room and an office. The interior of the upper floor has an east and a west terrace with two long glass facades that allow for flowing inside/outside spaces. The roof terrace above overlooks the village and offer a 360 ° view of the surrounding vineyards, the nearby lakes and the foothills of the Alps.
The ground floor plan of the new building consists of a rectangle and the first floor of a parallelogram that is oriented east and west. These two basic forms are connected by a series of spatial diagonals and merged into a flowing overall form, creating a number of diverse spaces, views and topographies, which relate to the sun, the patio, and the surrounding environment. The remaining areas of the parallelogram serve as east and west terraces that are used for events and wine presentations. The interior space can be used as a single large space or partitioned into individual rooms through a large sliding wall and four large doors. In the middle of this space is a free standing pentagon-shaped construction made up of wooden panels that includes a kitchen and bathroom. The building construction itself consists of concrete and masonry as well as wood construction for ceilings and walls. All terraces have wooden floors and the façade of the building is painted dark grey on the outside and white on the inside. The orientation of the glass facades, the integrated cantilevered canopies and the possibility to cross ventilate every room and very good insulation allow for a pleasant climate all year round.
The project is a reflection on the relationship between contemporary architecture and existing buildings and the sensitive organization of divergent climate requirements in a winery building.
Although Burgenland has the most continental climate of Austria, with outside temperatures of -20 ° C to +40 ° C each year, the winery tries to avoid the use of building technology. The wine itself should be stored at a constant temperature between +15 ° C to +20 ° C. The old wine cellar of the winery was the basis for developing the climatic strategy for the new winery. The cellar is partially submerged in the soil to even out the changes in outside temperatures. The spaces allows for the exchange of air through small air holes in the exterior walls and a large main door. The architects used these traditional methods and developed the new building in close collaboration with the winemaker who is accustomed to dealing with these climate and temperature conditions and understands a winery building as a working tool.
The winehall on the ground floor consists of three areas, which may be separated according to specific needs:
• Multi-functional processing area
• Bottle storage
• Wine and cask storage
The processing of the grapes is done in the fall when the grapes are pressed, while bottling is mostly done in the winter and prepared for shipping in bottles, cartons and pallets. The activities not only require a large space and functional processes, but a high standard of hygiene, which is ensured by easy-to-clean and acid-resistant surfaces. In spring, the focus is mainly on the vineyard and sales activities.
The practical and hygienic requirements for the hall and the consideration regarding the traditional cellar method have led to the following solutions: The solid external walls and the ceiling between the hall and wineloft are clad on the inside with a 120mm thick insulation panel system that consists of powder-coated steel sheets. The panels are sealed at the joints along their entire length of up to 12m to withstand wetness, humidity and vapor exposure, creating a highly-insulated shell. The concrete floor is not insulated in order to let the temperature of the soil balance the air temperature of the interior, cooling the air inside the building in summer and warming it in winter. Ideally the wine is stored at a continuous and narrow band temperature. During this time, the winehall is kept closed at all times to keep the room temperature stabile. The large self-closing door in the south and a fast-moving sectional door are only opened for a longer time if outside temperatures are suitable. During such days, the doors and the skylights are open to allow for cross ventilation for several hours to reduce moisture and to clean the air.
Above the winehall located on the upper level is the wineloft, a large space that can be divide into several areas, and that includes a wine presentation room, an open kitchen, a guest room, an office and two terraces. The space between the wineloft and winehall is a 1 m high empty volume that is ventilated and insulated to prevent condensation during extreme internal temperatures. A staircase connects the two areas of the building and acts as an exhaust duct, if necessary. Additional technical aids such as controlled mechanical ventilation or heating have therefore not been necessary for the winery.
The idea to carefully twist and deform parts of the wineloft was derived after the sun’s path. This passive strategy results in solar temperature gains for the interior spaces in winter and shades the rooms in summer. Due to the optimized orientation towards the sun, an ultra-low energy building standard with an energy index of 25 kWh / m² could be realized.
The upper floor consists of a highly insulated timber structure with a roof surfaces and mineral insulation of 40 cm and 0.15 W / m² K and exterior walls with a value of 0.2 W / m² K. The large glass surfaces allow for a continuous relationship between interior spaces and terraces and have a U-value of 0.9 W / m² K and a total value of 1.2 W / m² K. The wineloft is equipped with underfloor heating which is powered by a small air-to-air heat pump with 2.5 kW, which is only used at temperatures below -10 ° C. The partially folded roof shape allows for good cross-ventilation and a light-filled interior for all areas.
project description: Construction of a winery
including barrel vault, tasting room, office and guest rooms
location: Obere Hauptstrasse 10, A-7162 Tadten, Austria
client: Erich Sattler Winery
planning services: architectural planning
schematic design/design development/construction documents/site supervision
team: Andreas Frauscher, Patrick Herold, Richard Klinger, Kurt Sattler
construction company: Gartner Schienerbau GmbH
carpentry: Holzbau Kast GmbH
glass facade: Metallbau Raditsch GmbH
joinery: Glen Lynch
site area: 300 m²
floor area: 400 m²
gross floor area: 450 m²
cubage: 4.500 m³
building cost: €355.000
construction cost: €410.000 (building costs, interior, landscape)
capital cost: €460.000 (building costs, interior, exterior, fees, other costs)