GENERAL INFORMATION RENOVATION PROCESS RETROFIT SOLUTIONS EVALUATION

Ruckenzaunerhof

Kapellweg 5

39020

Tarsch, Italy

Architect

Dr. Arch. Sylvia Dell’Agnolo

cavourstrasse 7/b – 39100 bozen

info@da-k.net

00390471300236

Owner

Thomas Pfitscher

Kapellweg 5, 30920 Tarsch - Latsch (BZ)

t.pfitscher@alice.it

User

Dr. Arch. Sylvia Dell’Agnolo

Cavourstrasse 7/b – 39100 Bozen

info@da-k.net

+39 0471 300236

Contact Details

Alexandra Troi

Hochschule Coburg

alexandra.troi@hs-coburg.de

Other Information

Related publications
Ausstellung - Hosting the Dolomites ( Wien und Moskau) und Video ITAS Preis 2015 https://www.youtube.com/watch?v=Is-h1ELNBhA&feature=emb_title

In the village of Tarsch, in the middle of an inner alpine location, the "Ruckenzaunerhof" presents itself as a typical, Vinschgau stone building. The oldest parts of the farm can be dated back to the 15th century. Combined with new components, which have been sensitively integrated into the historical building, they now form a harmonious unit. The project was awarded the ITAS prize in 2015 for the best renovation of a farmhouse in South Tyrol.

GENERAL INFORMATION RENOVATION PROCESS RETROFIT SOLUTIONS EVALUATION

Energy performance

110 kWh/m2.y

Climate Zone Cfb

Altitude 845 m a.s.l.

HDD 3289

CDD 4

Protection level Listed

Conservation Area:
No

Level of Protection:
Denkmalschutz

Building age before 1600

Year of last renovation:
2015

Year of previous renovation:
0

Building use Residential (rural)

Secondary use:
Agricultural & Fishery

Building occupancy:
Permanently occupied

Number of occupants/users:
5

Building area Net floor area [m²]: 266,71

Building typology:
Detached house

Number of floors:
3

Basement yes/no:
Yes

Number of heated floors:
3

Gross floor area [m²]:
325,25

Thermal envelope area [m²]:
711,23

Volume [m³]:
1177,53

NFA calculation method:
Useful area (it)

Construction type

Stone masonry wall

External finish:
Rendered

Internal finish:
Plastered (on hard)

Roof type:
Pitched roof

+ MORE - LESS

RENOVATION PROCESS

Architecture

BUILDING DESCRIPTION

The Ruckenzaunerhof is located in the small community of Tarsch. The oldest parts of the building date back to the 15th century. The building has grown over the years and is constantly being developed further. It reflects the history of the village and the area particularly well. The preservation and renovation of the farm was therefore of enormous importance for the historical heritage of the village and thus also for its identity. Today, the farm, consisting of a residential and a farm building, lives from apple cultivation and serves as the centre of life for three generations. For this reason, in addition to the creation of spacious and modern living space for the family of the owner, as well as for his mother, temporary units for harvest workers are also planned. In general, a lot of emphasis was placed on flexibility in the floor plan planning. For example, the apartment of the client's mother can be added to the actual living space at any time. Before the refurbishment, the existing building was intensively examined. Thanks to a comprehensive building inspection and the resulting documentation of the building history, new components could be carefully integrated into the existing building without disturbing old structures, so that the character of the building was preserved. A particularly unusual aspect of the renovation was that the client himself had the building listed as a historical monument during the renovation process. It is extremely important to the family to protect the existing building and to preserve it for future generations.

Urban context

The building is located on the north-eastern outskirts of Tarsch, a village with 600 inhabitants. This is a popular holiday destination with its characteristic buildings. Like most of the villages on the Nörderberg, Tarsch's forest extends into the village. From there, holidaymakers will soon reach an extensive network of hiking trails, from which numerous fascinating natural beauties can be admired.

Heritage Assessment Files

http://www.provinz.bz.it/kunst-kultur/denkmalpflege/monumentbrowser.asp

State of repair

Conditions of the envelope

The building was extremely dilapidated before the renovation. Modern living, which meets today's standards, was not possible. For example, some rooms were hardly lit up at all due to the small existing openings. Also the energetic condition of the building did not correspond in any way to today's regulations.

HERITAGE SIGNIFICANCE

ELEMENTS WORTHY OF PRESERVATION

The preservation of historical structures played a major role in the renovation. For example, the cross vaulting in the entrance area was highlighted. The parlour was renovated. The valuable wood panelling was removed, an insulation layer of sheep's wool was applied and then reassembled, the parlour oven and the former pass-through in the kitchen were preserved. Another important area of the house is the veranda which is protected from the wind. Such a niche is typical for buildings in the Vinschgau Valley due to the often severe weather conditions and is also important for the inhabitants to be able to retreat.

Heritage Value Assesment

The building reflects the history of the place and the area. The large volumes of buildings that are often seen in the area did not exist in this form and size from the beginning: They have grown and developed over time. Thus, the present building probably originally had only a single square room, which can be dated to the 15th century. In the course of the centuries, the initial dwelling was extended more and more, until in the 19th century the last major intervention was the barn. During the refurbishment, therefore, particular care was taken to integrate new components into the historical building.

Aim of retrofit

Renovation + Extension

The aim was to create a feel-good atmosphere and the best possible living experience through targeted interventions and gentle, energy-efficient renovation. Although the historical stock was handled extremely sensitively, it was equally important not to restrict modern living. For the entire family, the construction phase was like a voyage of discovery through the building, through which they learned a lot about past times and the history of the place. Therefore, it is a great concern for all of them that the building should be preserved for future generations and that the acquired knowledge should be passed on.

Was there any change of use?

The building served both before and after the renovation as a residential and commercial building for the Pfischter family. However, temporary housing units for harvest workers were integrated into the basement in the course of the renovation. In addition, a small wooden extension was built on the western side of the building, which houses parts of the granny's mother's granny's apartment.

Lessons learned

In many areas of South Tyrol, the historical heritage is increasingly being lost, as more and more often dilapidated existing buildings are demolished rather than renovated. This development is extremely problematic, as it means that the identity of a place is being lost bit by bit. During the construction phase, the family became aware of the importance of preserving historical structures. They want to pass on this understanding of the existing buildings in the future.

Stakeholders Involvement

Architect
Dr. Arch. Sylvia Dell’Agnolo
cavourstrasse 7/b – 39100 bozen
info@da-k.net
Tel.00390471300236

Tools used

Was the renovation process done following a specific methodology? No

Energy calculation Klimahausberechnung

Link to the video of the ITAS prize (german)

RETROFIT SOLUTIONS

External Walls

Stone wall

Before the refurbishment, the existing exterior walls did not meet today's energy standards in any way. In the course of the renovation, a thermal insulation plaster of 60-80mm was therefore applied to the inside of the external walls.

During the restoration of the façade, in close collaboration with a restorer, the façade elements and plasters from the different periods were worked out. For example, the oldest still existing plaster from the 16th century was dabbed out.

U-value (pre-intervention) [W/m2K]: 1,428 W/m²K U-value (post-intervention) [W/m2K]: 0,635 W/m²K

More Details

Original wall build-up

Render - Historischer Putz (Außenkalkputz):
20 mm

Stone - Historische Bruchsteinwand:
600 mm

Retrofitted wall build-up

Render - Historischer Putz (Außenkalkputz saniert):
20mm

Stone - Historische Bruchsteinwand:
600 mm

Insulation - Wärmedämmputz:
70 mm

Windows

Wooden windows

When renovating historical buildings, the aperture of the interior to light is often a major problem due to small windows. To ensure that sufficient light enters the building, clear views were therefore an important aspect of the renovation. As a result, large glazed openings were created in certain parts of the building. In addition, solar energy gains in the interior could be achieved by favourable positioning of the openings. All existing windows were replaced by new windows (double-glazed) to meet today's energy standards.

The selection of the new windows was carried out in close cooperation with the Monument Office. The original materiality of the wooden windows, as well as the typical muntin division, was to be restored without fail.

Existing window U-value Glass [W/m2K]: 5,0 New window U-value Glass[W/m2K]: 1,4 Existing window U-value Frame [W/m2K]: 1,7 New window U-value Frame [W/m2K]: 1,1

More Details

Existing window type	Casement window
Existing glazing type	Single
Existing shading type	NA

New window type	Casement window
New glazing type	Double
New shading type	NA
New window solar factor g [-]	0,64

Other interventions

ROOF

GROUND FLOOR

OTHER

MEASURES TO INCREASE AIRTIGHTNESS

ROOF

The roof, which was not insulated in any way before the renovation, was adapted to today's energy standards in the course of the renovation. In order to be able to use the space under the roof as living space as well, it would be provided with wood fibre insulation. Damaged rafters were replaced.

The roof and its form, which was formed by the different building epochs to a certain skewed plane, should be preserved in this form. To make this possible, the rafters were doubled towards the interior so that the insulation could be inserted in the second rafter bearing without having to raise the original roof. It was also ensured that only rafters that were damaged were replaced. This made it possible to preserve many historical building elements, such as the wooden support that carries the roof in the front area of the porch, the age of which could be dated to the 16th century through a dentrochronological examination.

U-value (pre-intervention) [W/m2K] 3,088 U-value (post-intervention) [W/m2K] 0,425

More Details

Original roof build-up

Tiles - Dachziegel:
40 mm

Other - Dachlattung:
40 mm

Other - Holzschalung:
20 mm

Other - Sparren (Holz):
200 mm

Retrofitted roof build-up

Tiles - Dacheindeckung Mönch und Nonne:
60 mm

Other - Dachlattung und Auflegebahn:
40 mm

Other - Holzschalung:
20 mm

Other - Sparren (Holz) mit dazwischenliegender Holzfaserdämmung:
100 mm

Other - Dampfbremse und Untersichtschalung:
18 mm

Other - Innensparren (Holz):
160 mm

GROUND FLOOR

The base plate was upgraded to meet the requirements of today's energetic standards.

In addition, the building was equipped with underfloor heating, which ensures the basic heat in the various rooms.

U-value (pre-intervention) [W/m2K] 0 U-value (post-intervention) [W/m2K] 0,28

More Details

Original groundfloor build-up

Other - Nicht bekannt:
1 mm

Retrofitted groundfloor build-up

Finish - Estrich mit Fußbodenheizung:
100 mm

Other - Trennlage (Nylon):
1 mm

Insulation - Dämmung:
30 mm

Concrete slab - Leichtbeton:
100 mm

Concrete slab - Betonestrich:
60 mm

Insulation - Dämmung:
100 mm

Concrete slab - Bodenplatte mit Auflegebahn:
200 mm

OTHER

MEASURES TO INCREASE AIRTIGHTNESS

Both new and tighter windows as well as layers of plaster inside and outside have greatly increased the comfort in the house.

Airtightness (pre-intervention) [ach@50Pa] 0 Airtightness (post-intervention) [ach@50Pa] 0

HVAC

HEATING

The building was equipped with underfloor heating, which ensures the basic heat in the various rooms. In addition, wall heating was installed in some areas to avoid cold radiation. Due to the construction required by this design, it was possible to provide minimal additional insulation.

Only the parlour is heated by a stove, which is stoked by the owner with wood from his property.

More Details

	New primary heating system	New secondary heating system
New system type	not known	Stove
Fuel	not known	Holz
Distribuition system	Fußboden-/ Wandheizung	Radiating surface
Nominal power	na kW	na kW

Energy Efficiency

Energy Performance

Energy performance certificate: With a calculated 89 kWh/m²a for Bolzano climate, the building now corresponds to Klimahaus D
Voluntary certificates: No

Energy Use

Consumption_estimation_Before: 360 kWh/m2.y
Consumption_estimation_After: 110 kWh/m2.y

Primary Energy
Consumption_estimation_Calculation_method: NA
Consumption_estimation_Including_DHW: No

Internal Climate

Temperature

The average internal temperature is 20°C.

Daylight

During the refurbishment, some small openings were replaced by larger ones in order to ensure sufficient aperture. At the same time, solar gains could be achieved through the targeted placement of these openings in the facades facing the sun. Thus, about one eighth of the heat energy losses are covered by solar radiation alone.

Costs

Financial Aspects

No information published

Running Costs

Lifecycle cost
No