Rooftop Office, Aachen

Prismatic building above the rooftops of the city

As a self-confident addition to an existing 1960s building, the rooftop office utilizes previously unused space potential and makes an architectural statement in a heterogeneous urban context.
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Client
Private
Status
Completed
Progress
2014-2016
Size
400
m2

Densely built-up and listed city centers often face the challenge of having to respond to the growing demand for work and living space. Maintaining distances from neighboring buildings and respecting sight lines play an important role here. One solution is to add rooftop structures that blend in sensitively with the local conditions and form a new unit with the original building.

The rooftop office designed by CROSS Architecture is a successful example that shows how a strong architectural statement can be created without competing with the surrounding historical context.

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With its trapezoidal basic structure and the differently inclined, all-round glazed façade front, a charged image is created: the building is a gesture that turns towards the city. Towards Aachen Cathedral and the town hall, the cubature is inclined outwards, towards the action. On the opposite side, it faces inwards. This design feature not only allowed CROSS Architecture to create an aesthetic highlight in the urban space, but also to comply with the specified distances to neighboring buildings. There is a terrace all around.

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Inside, the glass façade offers an all-round view of the city. The CROSS Architecture team extended the room height in the middle of the building. The ceiling, which slopes slightly downwards towards the façade, creates the impression of a protected space, a kind of cocoon that creates a concentrated working atmosphere. This impression is reinforced by the dark color scheme.

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The project is designed as a hybrid steel and timber construction. The reduced use of materials in the interior - oak parquet for the floor and the 100% acoustically covered slatted ceiling - creates a high-quality room and first-class acoustics.

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Client

Private

Acquisition

Direct order

Team

M. Sporer, C. Wens, S. Vijgen, L. Polaczek, K. Görling

Structural engineering

KKI Ingenieure

Technical engineering

IQ Haustechnik

Fire safety

KKI Ingenieure

Building physics

KKI Ingenieure

Tendering, awarding and cost calculation

Höhler + Partner Architekten und Beratende Ingenieure

Photo

Jens Kirchner