049_Timber hat


rundzwei designed a factory and office building for Hald & Grunewald. The new building consists of a 10 m high hall (factory building) and an office building (operations building), which are directly connected to each other and form a compact volume.

The 2nd floor of the operations building is arranged as a cantilever over the compact volume. To connect the two structures, a circumferential canopy is connected to the truss, which rests like a hat on the lower structure. The framework of carbonised larch changes towards the transom and dissolves into horizontal timbers. These horizontal timbers deepen to provide permanent sun protection for the office functions behind. The lower structure, clad in natural larch, provides a deliberate contrast to the dark façade above.

Sustainability and energy:
The building is a load-bearing timber structure. A combined heat and power unit supplies the industrial underfloor heating in the production hall and in the atrium of the company building. The building is insulated to low energy standards. Controlled ventilation has been dispensed. Fresh air is supplied manually by opening windows, and only the interior rooms are mechanically ventilated. This eliminates the need for a complex ventilation system with heat recovery. The moisture-absorbing wooden surfaces of the construction are kept open, contributing to the natural conditioning of the indoor air.

The all-round louvred canopy is primarily for weather protection, while the same louvred structure on the top floor provides sun protection in summer.


status: built

client: Hald & Grunewald GmbH

year: 2019 - 2022

size: 4.900 m²

cost:  Mio €


Paolo Bradicic, Marc Dufour-Feronce, Sunghoon Go, Asya Güney, Deborah Matter, Marie Nägele, Hannah Reckenthäler, Andreas Reeg, Shadi Zaghloul


rundzwei Architekten Reeg&Dufour PartGmbB

Goethestraße 2-3
Staircase B
10623 Berlin

T +49 30 202 376 45
F +49 30 202 376 45 9

Current Job offers at rundzwei


Junior Architect (m/f)

rundzwei is always looking for talented and enthusiastic young architects. We are looking for junior architects fresh from university or with 1-2 years work experience for a range of design and execution projects. Please send your meaningful application in form of a project portfolio (not larger than 5MB) to iwannabe[at]rundzwei.de. We are awaiting your application with anticipation!

Office Assistant (m/f)

rundzwei is looking for a office assistant preferably with BA background for a full-time position. Your tasks are among others the office management, salary accounting and assistance to the office owners. You have 2 years work experience within other architectural offices then send us your meaningful application to iwannabe[at]rundzwei.de. We are looking forward to your application!

Team Leader / Project Architect (m/f)

rundzwei is looking for architects with at least 4-5 years work experience. Ideally you have been leading a project from concept design, through planning up to and through construction phase. You are creative and you like special solutions, you are interested in detailing then send us your meaningful application with work samples (not larger than 5MB) to iwannabe[at]rundzwei.de. We are looking forward to receiving your application!