The Energy Efficient Facade

12th facade day (Deutscher Fassadentag) in Hamburg, Germany

Creative freedom meets added value. Innovation is combined with sustainability. Energy efficiency increases economic efficiency. These key terms were the guiding principles of the 12th German facade day, Deutscher Fassadentag®, which took place with more than 80 participants on 22 November 2011.

12th facade day (Deutscher Fassadentag®) in Hamburg, Germany
At the IBA-Dock in Hamburg, Germany, 80 participants listened to interesting lectures on the 12th facade day
Fotos: left, right: Martin Jung/Cubus Medien, Mitte: Tim Westphal/DETAIL

The event was hosted by FVHF, the first association to organise an expert convention independent of the large trade fairs of the construction industry. “The 12th German facade day has been a great success“, concluded CEO of FVHF, Ronald Winterfeld, the symposium, which was held under the guiding principle of RVCF: The Energy Efficient Facade. ”We were met with great interest by more than 60 FVHF member companies, our renowned cooperation partners – the Federal Foundation for Architectural Culture, IBA Hamburg and the federal division for facade construction from the association Hauptverband der Deutschen Bauindustrie e.V. – and many external participants, predominately architects.” FVHF will continue to organise regional conferences on the topic of rear-ventilated facades in the future and host them independent of the award ceremony of the German facade prize, Deutscher Fassadenpreis, for rear-ventilated facades.

IBA-Dock as a model project for rear-ventilated facades
We would like to particularly thank event organiser and CEO of IBA Hamburg GmbH, Uli Hellweg, who provided the IBA-Dock in the harbour of Hamburg, Germany, as the venue. In his presentation, Hellwig stressed the necessity of using regional resources. This became even more apparent by taking a look at the selected venue: The IBA-Dock in Hamburg-Wilhelmsburg, Germany, is a highly insulated model project with a rear-ventilated facade, clad with fibre cement panels. Erected on pontoons, it uses the tidal range of the Elbe River to generate energy, thus producing the energy for its own operation. Uli Hellweg‘s lecture on aspects of city construction and architectural culture gave a look into the future of bio-reactive facades and possible effects of future facade types.

Change in German Energy Policy
In his lecture, Michael Knipper, attorney and Managing Director of Hauptverband der Deutschen Bauindustrie, found the change in German energy policy to be a good foundation for future developments. According to Knipper, an increase in residential buildings has been observed, while the political course for the conservation of resources and energy provided opportunities for the construction industry.

Against compound facades, but for correct separation
Prof. Michael Braum, CEO of the Federal Foundation for Architectural Culture, addressed the topic of architectural culture in respect to the lifecycle of facades. In this context, he argued against the employment of compound systems and for the use of correctly separated facades, such as RVCF.
In her lecture entitled “Creative Freedom and Added Value. Sustainable Design and Construction with rear-ventilated facades“, Prof. Annette Hillebrandt representing msah Architekten , showcased a variety of projects, among them a commercial building that received the German facade prize 2011, Deutscher Fassadenpreis 2011, for rear-ventilated facades. She too argued for the correct separation of materials, as well as the disassembly and recycling of composites, which should be ensured during the early stages of planning.

Chance photovoltaic facade
Marcus Liebher, from Bau-Plan-Consult GmbH, stressed the requirements of rear-ventilated facades, in particular in terms of building physics, as well as the unexplored potentials of photovoltaic facades. Last, but not least, Maria Roos, representing Fraunhofer Institut, addressed the economic advantages of energy efficient and energy producing facades.