Around 1100 new subsidised rental flats are being built in a total of 3 construction phases in the Innsbruck district of Reichenau. The residential compelx is characterised by an open meeting zone, called "Platz" in the inner courtyard, roof gardens as semi-public spaces.

The building has a local heat generator via heat pump and PV systems for electricity generation.

Thermal envelope

Exterior wall:

• 5mm external plaster
• 240mm rockwool
• 200mm reinforced concrete
• U-value = 0.14 W/(m2K)

Basement floor / floor slab:

• 10mm floor covering
• 70mm heated screed
• 30mm EPS Sto insulation board Top31
• 70mm EPS lightweight fill
• 300mm reinforced concrete
• 200mm Rockwool Decrock
• U-value = 0.11 W/(m2K)

Roof:

• 60mm XPS
• 10mm bitumen 2-ply
• 220mm EPS Sto insulation board Top31
• 5mm aluminium bitumen waterproofing membrane
• 200mm reinforced concrete
• U-value = 0.11 W/(m2K)

Mechanical systems

Heating installation: The heat is generated by a central water-water heat pump, the distribution is a low-temperature underfloor heating.

Domestic hot water: The DHW is provided by district heating.

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