Community Hall Zwischenwasser
Community of Zwischenwasser, Austria
Visit is possible during office opening hours by appointment
State of repair
Aim of retrofit
Hauptstraße 14, 6835 Zwischenwasser
Tel.+43 5522 4915-0
Jahnstraße 11, 6900 Bregenz
Dipl. Ing. Barbara Keiler
Amtsplatz 1, 6900 Bregenz
Tel.+43 676 88325 471
DI Bernhard Weithas, Ingenieurbüro für Baupysik
Rosenweg 3c, 6923 Lauterach
Tel.+43 5574 86568
Austraße 8a, 6923 Lauterach
Tel.+43 5574 38550
Life Cycle Analysis (LCA) Wirtschaftlichkeit LED
Other KGA Kommunaler Gebäudeausweis
The outer wall was insulated on the inside with 6 cm and 10 cm thick calcium silicate panels. These were either plastered on the inside or clad with panelling. The U-value improved to 0.43 or 0.31 W/m²K.
The outer appearance of the wall was not changed.
Wooden windows with laminated glass
U-value for windows with standard size is 0.77 W/m²K
The windows were newly installed in a similar division as wooden windows. On the ground floor the windows were enlarged.
MEASURES TO INCREASE AIRTIGHTNESS
The roof was insulated between the rafters and below as well as above. The tile covering was not changed. Sound insulation panels were installed in the interior.
The external impression remained unchanged.
The ground floor in the service area was lowered and a new floor was installed.
The intervention allowed a better use of the ground floor as a public zone. From the outside you cannot see the measure.
With the new internal insulation, the airtightness level was also renewed.
DOMESTIC HOT WATER
Central controlled ventilation: the supply air is introduced draught-free into the group rooms, overflow via silencers in the cloakroom/staircase area, Extraction of exhaust air via WC groups and centrally on the top floor. Meeting room small and large with supply air and exhaust air. There are multizones on the ventilation unit with heating register for: Office general, small meeting room, large meeting room.
The ventilation ducts are led invisibly.
Before the renovation, hot water was heated in an electric hot water tank in the basement with 120 litres. After the renovation, it is prepared decentrally in flow heaters and small storage tanks on each floor.
The measure has no influence on the character of the building.
Voluntary certificates: Communal Building Pass
Consumption_estimation_Before: 68,117 kWh/y
Consumption_estimation_After: 32,308 kWh/y
Consumption_estimation_Calculation_method: Steady state simulation (e.g. EPC, PHPP)
20 to 22 ° Celsius
measured air quality, measured on 11th of December 2015, VOC < 300 µg/m³, formaldehyde < 0.04 ppm
The renovation was financed by the municipality Zwischenwasser and by the allocation of needs by the Land Vorarlberg. Due to the high score in the municipal building pass, the municipality received 4.0% additional funding for high energy and ecological quality.
Amount includes: building cost