Oeconomy building Josef Weiss
State of repair
Aim of retrofit
DI ZT Julia Kick
Franz-Michael-Felderstraße 5a, 6850 Dornbirn
Bundesdenkmalamt Vorarlberg, Dipl. Ing. Mag. Barbara Keiler
Amtsplatz 1, 6900 Bregenz
Tel.+43 1 53415-850858
Forachstraße 29, A-6850 Dornbirn
Hygrothermal assessment No
Life Cycle Analysis (LCA) No
External wall ventilated wooden facade
In order not to change the exterior appearance of the listed wooden facade on the upper floor, the client decided to use an insulated wall construction on the inside. Nevertheless, the original load-bearing structure is still largely visible on the inside.
During the adaptation, the focus was on a respectful treatment of the existing building stock. The external appearance of the building had to be retained and the patina of the wooden facade screen could be left as desired.
ÖkoVenster IV 88 Spruce (brand name)
The original shape of the window openings has been retained in order not to change the character of the building. The windows specially made for this purpose comply with the energy standard for the renovation year 2016. In order to bring more light into the living space on the upper floor, a small loggia has been placed in front of the east-facing living space, which is "hidden" between the outer facade and the glass front that is offset inwards.
In the old stock there were no classical windows with glazing but only window openings, which had a cross lathing as weather protection. All window openings were retained during the renovation. Only windows made of untreated spruce wood were installed.
In order to also be able to use the attic as living space, the roof truss was insulated as a ventilated pitched roof.
The renovation was carried out with the utmost care and meticulousness. The damaged areas were removed and replaced with "prostheses". "We did not attempt to match colors or retouch. Completed wooden parts honestly remain visible as new," explains Julia Kick.
In the entire area of the former barn, shed and horse stable, the floor was insulated against the ground.
The appearance of the building had to be preserved due to the protection of historical monuments. Thus the division of the rooms on the ground floor was left as it was, but put to a new use.
DOMESTIC HOT WATER
The existing building was used as stable and shed, so there was no heating system.
To make the building habitable at all, it was necessary to install a heating system. For reasons of monument protection, neither solar nor PV was allowed to be installed on the building. For these reasons the owners decided to install a comfort ventilation system with heat recovery and an additional gas boiler.
Comfort ventilation with heat recovery
Due to the use of the Berstandsgebäude as a stable and shed, there were no heating or ventilation systems and thus no system components worth preserving.
The existing building had no hot water preparation.
In order to be able to use the building as a residential building, it was necessary to install a hot water system.
Voluntary certificates: No
Consumption_estimation_After: 71,02 kWh/m2.y
Consumption_estimation_After: 90,23 kWh/m2.y
Description: The residents find the climate in the apartment and in the studio pleasant.
The residents have an average and common room temperature in the building.
The residents report a pleasant indoor climate.
The windows allow enough daylight to enter the building, creating a pleasant lighting environment.
The wooden panelling of the interior rooms provides the building with an acoustic balance.