ALLGEMEINE INFORMATIONEN RENOVIERUNGS-PROZESS SANIERUNGS-LÖSUNGEN BEWERTUNG

Rožna ulica 15, Idrija

Rožna ulica 15

5280

Idrija, Slowenien

Architekt

Studio M

Bazoviška ulica 5, Tolmin

Besitzer

Idrija municipality

Mestni trg 1, 5280 Idrija

obcina.idrija@idrija.si

+38653734500

Bewohner

Idrija municipality

Mestni trg 1, 5280 Idrija

obcina.idrija@idrija.si

+38653734500

Ansprechpartner

Jana Podgornik

Posoški razvojni center

jana.podgornik@prc.si

+38653841500

Other Information

This building was constructed in the second half of the 19th century for the residence of mining families. It has several characteristics of the miners house which is typical for the town of Idrija and represents very unique architecture. Mercury mining in Idrija has a long tradition and also global recognition as Unesco World Heritage Site since 2012. The building was in residential use until 2004, when it was so damaged by an earthquake that it was no longer habitable. Today, the ground floor is used for business premises and the upper floors are organized as apartments. For the needs of energy rehabilitation of the building, the external walls and roof were adequately insulated. Facade ornaments were made anew in accordance with the cultural heritage office demands.

ALLGEMEINE INFORMATIONEN RENOVIERUNGS-PROZESS SANIERUNGS-LÖSUNGEN BEWERTUNG

Energieeffizienz

44 kWh/m2.y

Klimazone DFc

Höhe über dem Meer 330 m ü.d.M.

Heizgradtage 250

Unterschutzstellung denkmalgeschützt

Ensembleschutz:
Ja

Stufe der Unterschutzstellung:
heritage of local importance

Baualter 1850-1899

Letzte Sanierung:
2018

Vorhergehende Sanierungen:
0

Gebäudenutzung Residential (urban)

zusätzliche Nutzung:
Offices

Gebäudebelegung:
Permanently occupied

Gebäudefläche Nettogeschossfläche [m²]: 793,0

Gebäudetyp:
Semidetached house

Anzahl der Stockwerke:
4

Keller ja/nein:
Nein

Anzahl der beheizten Stockwerke:
4

Bruttogeschossfläche [m²]:
1108,61

Volumen [m³]:
3056,21

NGF Berechnungsmethode:

Bauart

Stone masonry wall

Außen:
Rendered

Innen:
Plastered (on hard)

Dach:
Pitched roof

+ MEHR - WENIGER

Poor condition of the entrance extension. ©Lidija Manfreda

RENOVIERUNGS-PROZESS

Architektur

BESCHREIBUNG

The apartment building was built to accommodate larger mining families as it is located near one of the entrances to the mine. The main load-bearing structure consists of stone masonry walls and wooden slabs and a roof. The entrance extension was added later when new materials such as brick were available and used too. There are business premises on the ground floor, the floors were intended for apartments, the attic was unusable. After the earthquake, the load-bearing structures were thoroughly statically valorized and it turned out that it make sense to strengthen the building. The load-bearing walls were reinforced and injected, reinforced concrete ties were installed, and the wooden ceilings were replaced with reinforced concrete ones, which further strengthened and connected the load-bearing system. At the same time, the owner, the Municipality, decided to renovate the apartments on the 1st and 2nd floor and arrange an additional apartment with storage for residents in the attic. Due to the poor condition of the entrance extension, it was removed and rebuilt with auxiliary rooms for residents. For the needs of energy rehabilitation, a 15 cm layer of thermal insulation was added on the outside. Facade ornaments were made anew. The roof was also thermally insulated when arranging the attic, and appropriate building furniture such as wooden windows and doors were installed. The building is heated by gas, as there is a gas pipeline in the city.

Städtebaulicher Kontext

Idrija is a town with approximately 6,000 inhabitants in the north-western part of Slovenia, where the pre-Alpine and Karst worlds meet at a tectonic fault. Due to hilly and steep terrain, poor natural possibilities and remote location, the surroundings of Idrija were a very sparsely populated landscape. This building was constructed in the second half of the 19th century for the residence of mining families. It was built later than majority of typical miners' houses in Idrija but it still has several characteristics of this unique architecture. Nowadays it lies close to the city center and is surrounded by other residential buildings.

Erhaltungszustand

Erhaltungszustand der Gebäudehülle

The construction was damaged in the earthquake (stone masonry walls, wooden constructions). The aim of retrofitting was statical and energy efficiency improvement and general renovation.

DENKMALWERT

ERHALTENSWERTE ELEMENTE

According to the The Institute for the Protection of Cultural Heritage of Slovenia, the following conditions for renewal were required: preserving of the roof inclination, shape, orientation and covering; position of the double wing wooden windows and its framing; facade with original elements and color. Although the color of this house was not typical for classical miners' house.

Denkmalwert und wie er bestimmt wurde

The building was assessed by The Institute for the Protection of Cultural Heritage of Slovenia. It was built nearby one of the entrances of the mine around 1880 as a residential house for bigger mining families. Although it is not a typical representative of a Miner’s house in Idrija, it still has quite a few characteristic features for this particular architectural style. The most recognizable characteristics of a typical Miner's house are: steep roofs, roof windows, dormers, multi-storey and multi-residential, small windows - symmetrically placed, the load-bearing structure is a combination of stone and wood, facade is originally plastered and whitewashed, built on steep slopes.

Ziel der Sanierung

Renovation

Renovation after the earthquake, refurbishment for municipal appartments, improve energy efficiency of the building, to preserve the elements of architectural heritage

Was the intervention planned following a step-by-step approach?

The building was renovated within the earthquake refurbishment programme.

Beteiligte Akteure

Öffentliche Hand
Idrija Municipality
Mestni trg 1, 5280 Idrija

Architekt
Studio M
Bazoviška ulica 5, Tolmin

Berater Denkmalpflege
National Institute for the Protection of Cultural Heritage in Slovenia
Delpinova ulica 16, 5000 Nova Gorica

Eingesetzte Software/Berechnungstools

Folgte die Sanierung einer spezifischen Methode? Nein

SANIERUNGS-LÖSUNGEN

Außenwände

stone masonry wall

The outside walls were statically reinforced. For the needs of energy rehabilitation, a 15 cm layer of thermal insulation was added on the outside. Facade ornaments were made anew.

U-Wert (vor Sanierung) [W/m2K]: 1,51 W/m²K U-Wert (nach Sanierung) [W/m2K]: 0,21 W/m²K

Mehr Details

Aufbau Bestandswand

Plaster - external:
30 mm

Stone - wall:
500 mm

Plaster - internal:
30 mm

Aufbau sanierte Wand

Plaster - thin layer facade:
3mm

Insulation - thermal insulation:
150 mm

Stone - wall:
500 mm

Air gap :
12 mm

Other - Gypsum gypsum board insulation:
12 mm

Fenster

Facade windows

Window replicas were made specially for the building according to the conservation plan.

Bestandsfenster U-Wert Glas [W/m2K]: 5,8 Neues Fenster U-Wert Glas [W/m2K]: 1,1

Mehr Details

Fenstertyp Bestand	Box-type window
Verglasungsart Bestand	Single
Verschattung Bestand	NA

Neuer Fenstertyp	Casement window
Verglasungsart des neuen Fensters	Double
Verschattung des neuen Fensters	NA

Weitere Maßnahmen

DACH

ERDGESCHOSS

DACH

U-Wert (vor Sanierung) [W/m2K] 3,3 U-Wert (nach Sanierung) [W/m2K] 0,15

Mehr Details

Aufbau Bestandsdach

Other - corrugated asbestos cement roof panels:
13 mm

Other - roof timber frame:
100 mm

Aufbau saniertes Dach

Tiles - clay:
20 mm

Other - sub-structure wood:
20 mm

Other - thermal insulation:
220 mm

Other - Damp Proof Membrane:
1 mm

Other - Gypsum gypsum board insulation:
12 mm

ERDGESCHOSS

U-Wert (vor Sanierung) [W/m2K] 2,8 U-Wert (nach Sanierung) [W/m2K] 0,27

Mehr Details

Aufbau Boden/Kellerdecke im Bestand

Finish :
10 mm

Other - cement floor screed:
50 mm

Concrete slab :
100 mm

Aufbau Boden/Kellerdecke nach Sanierung

Finish :
10 mm

Other - cement floor screed:
60 mm

Insulation - thermal insulation:
120 mm

Insulation - hydro insulation:
10 mm

Concrete slab :
100 mm

HVAC

HEIZUNG

BRAUCHWARMWASSER

HEIZUNG

The building is connected to the gas grid of the town.

Mehr Details

	Heizungssystem nach Sanierung
Art der Heizung	Boiler
Brennstoff	Gas
Wärmeverteilung	Radiators
Nennleistung	45 kW kW

BRAUCHWARMWASSER

Common gas boiler is being used both for heating and preparation of domestic hot water. There was no influence on protected elements.

Mehr Details

	Brauchwarmwasserbereitung nach Sanierung
Typ	with heating system
Brauchwasserspeicher	Ja
Wärmerückgewinnung aus Brauchwasser	Nein

Energieeffizienz

Energieausweis energy audit
Freiwillige Zertifikate Nein

Energievrabrauch

Heizung
Primärenergie 97 kWh/m2.y
Energieverbrauch nach Sanierung 44 kWh/m2.y

Primärenergie
Berechnungsmethode Steady state simulation (e.g. EPC, PHPP)
Energieverbrauch nach Sanierung 97 kWh/m2.y

Kosten

Finanzielle Aspekte

The building was damaged in the eartquake and included in the national programme of refurbishment that was managed by the technical office. The overall budget is a combination of national and local public funding (Municipality of Idrija).

Investitionskosten

Total investment costs
683.000 EUR (total)

Betriebskosten

Lifecycle cost
Nein