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The project Lorystraße 54-60 is a medium-sized housing block with 95 flats, completed in 1966 and owned by ‘Wiener Wohnen’, the city-owned social housing operator. The thermal refurbishment reduced the heat energy demand by more than 80 percent. Additionally, a 9 kWp PV-System was installed.
The building in Lorystraße 54-60 was built from 1964-66 and since then, only limited maintenance works were done. Hence, the thermal refurbishment was the first broad intervention since more than 50 years. The building needed a lot of improvements for it to comply with modern standards and to increase the usability for the current and future tenants.
Refurbishment and modernisation of energy supply
Lorystraße 54-60 (95 flats, 8.800 m²) is a city-owned social housing block, managed by Wiener Wohnen. The following technical improvements were planned:
▪ Refurbishment of the building envelope from 125 to 52 kWh/m2 for space heating and warm water
▪ Efficiency improvements to the energy supply
▪ Installation of PV plants of 7 kWp on the roof
▪ Preparation of the parking garage for e-mobility
▪ ICT-based central management and monitoring of all buildings supplied by distance heating in the district
Refurbishment Concept
Therefore, a wide range of measures were necessary to adapt the building to modern standards:
▪ The refurbishment of the façade (exchange of windows, heat insulation), the roof and the basement ceiling reduces the calculated heat energy performance (HEP) from 125 kWh/m² to 52 kWh/m².
▪ The fire safety of the building is increased by a pressure aeration in all four staircases and doors in higher fire protection class to flats and community facilities (laundries, cellars, etc.).
▪ The modernisation/renewal of building equipment (elevators, plumping) increases energy performance and safety.
▪ The installation of a roofed waste…
Citizen engagement and improvement of the neighbourhood plays an important role in the project. Firstly, Wiener Wohnen as building owner, together with the municipal department for architecture and city design, worked out three different colour concepts for the façade. The tenants voted for their favourite concept and decided upon it. Secondly, planned improvements in the park vis á vis Lorystraße 54-60 are planned to be developed together with the tenants involvement.
