Project of the month
New content for the Gasometer Berlin
The site of the former gasworks in Berlin Schöneberg has undergone a structural transformation in recent years. Since its acquisition in 2008, EUREF AG – short for Europäische Energiereform AG – has been developing the urban quarter in line with the energy transition: impressive examples of climate-neutral, resource-saving and intelligent urban planning and the conversion of existing buildings have been created here.
The latest addition to the EUREF Campus: a new building has been erected in the former gasometer. Still visible from the outside the preserved, listed steel frame serves as the framework for a new, multi-storey office building. Open to the public, the top floor also houses the Skylounge with catering facilities. A glazed terrace offers visitors an impressive panoramic view of Berlin from a height of around 66 metres. In line with EUREF AG’s climate targets, the roof of the new core building was finished with an energy-efficient roof structure from Kalzip.
High standards
When planning the building, the owners placed a particularly high value on sustainability. For example, renewable energies and combined heat and power generation are used to control the centralised heating and cooling generation in the building. In addition, a highly insulated building envelope was used to minimise energy loss and consumption.
An energy-efficient solution was also found for the roofing of the top floor. The Kalzip warm roof system chosen, with its excellent insulation performance, helps to protect the building from heat loss in the cold months. But even in summer, and especially under the dark roof cladding, the insulation helps to insulate the interior from the summer heat. The entire construction also scores points for its low weight.
Designed as a complete construction system without thermal bridges, the warm roof system not only fulfils the requirements of the planners and building owners for the high energy standards of the building. The installers also benefited from the fast and largely weather-independent installation.
Quick and easy to assemble
The supporting shell of the roof was designed as a curved reinforced concrete ceiling. To level out any unevenness in the substrate, hat profiles were first mounted on the full-surface vapour barrier. These allow the tolerances in the concrete substrate to be levelled out easily.
The system-compatible composite clips were then fixed to the top-hat profiles. To install the conically shaped standing seam profiles, they could simply be installed at the required distances. Together with the cap profiles, they provide sufficient space to accommodate an efficient thermal insulation layer under the uppermost roof cladding.
Due to the completely circular roof geometry, there were corresponding requirements for the structural-physical boundary conditions, the shape of the standing seam profiles and the details. In order to be able to reproduce the circular roof, it was initially divided into three sections. The Kalzip factory in Koblenz has all the necessary equipment and expertise to produce the standing seam profile sheets for each ring. The standing seam profiles were individually cut to size and conically shaped for each section on modern roll formers. With appropriate labelling, the profiled sheets could be assigned and installed on the construction site.
Colour design
The building itself shines from the outside with a dark grey, glazed façade surface. Restored in a light shade of grey, the steel frame stands out visually from the new building core and gives it an industrial-historical setting.
The roof was also finished in a dark colour: The anodised anodised Ultradark surface ensures a durable, stable colour. The material for the details was also supplied by Kalzip. Matching colour finishes for skylight domes and other recesses in the roof surface create a harmonious overall appearance.
Thoughtfully considered. KALZIP.
Contact
Kalzip GmbH
Yannick de Beauregard
Kalzip Marketing
August-Horch-Str. 20 – 22
56070 Koblenz
Phone: +49 261 9834 0
Fax: +49 261 9834 100
E-Mail: yannick.de-beauregard@kalzip.com
