Umweltbundesamt

Insulation & Facades

Wohnanlage mit Holzfassade und Solarenergie
© BMU / Brigitte Hiss

As a large amount of the energy supplied to a building is required for heating purposes, significant savings can be made with thermal insulation.
The Energy Saving Ordinance (EnEV) has set new standards in this respect and has boosted the development of highly insulating façade systems. The demand for highly efficient thermal insulation calls both for thick insulation layers (20 cm for the outer wall) and a consideration of thermal bridge effects. Technical guidelines give advice on how to design buildings low in thermal bridges.


In addition to the classic heat insulation made of polystyrene or mineral fibres, new technologies not only contribute to the avoidance of heat loss, but also enable heat from solar radiation to be used. This can be achieved with transparent thermal insulation. Unlike transparent thermal insulation, state-of-the-art technologies for intelligent insulation only transfer the heat to the inside of the building when this is necessary. During high temperature periods in the summer the insulation switches to a highly insulating status.
The integration of solar thermal or solar power systems into the façade of the building is just one of the ways of using heat received from solar radiation.


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PDF-IconComprehensive Improvement of the Ecobalance, Expansion of the Application Areas, and Strengthening of the Competitiveness of a Cellulose Insulant Made from Old Newspapers
The combination of wetting, dedusting technology, and recycling filters dusts and reduces the dust emission during production of the cellulose insulant. An additional dust reduction was achieved by using a hose-in-hose system and a Big Bag fill system. The borate quantities used as a fire barrier were reduced as well. Slushing tests and adding other waste materials lead to a lower thermal conductivity (detail information in German).
Source:  Federal Foundation for the Environment (DBU)
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Link-IconDevelopment of a transparent front damming system
Transparentes Wärmedämmsystem - Acrylröhrchen mit einer Kapillarstruktur
© DBU
In case of the transparent heat insulation (TWD) of fronts the sunbeams hit the translucent elements which at the same time minimize the outward heat transfer. A high efficiency is reached if there are walls with high gross density behind the TWD elements. For shading in the warm season outer blinds were developed which, in the closed condition, improve the insulation value (U-value) of the wall as well as are weather-resistant, wind stable, and noiseless.
Source:  Federal Foundation for the Environment (DBU)
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PDF-IconEnergy-saving external wall redevelopment with industrial prefabrication techniques
The goal of the applied research project of the "Ruhr University Bochum" is the development of prototypes of an economic, energy-saving external wall redevelopment system for old buildings, which can be applied quickly and without scaffold, in order to avoid the problems connected with the usual redevelopment technology (high costs, long construction period, disturbances). The project is promoted with Federal Funds by the agency responsible for the project Jülich PTJ.
Source:  Project Management Jülich, Forschungszentrum Jülich GmbHm Jülich GmbH, Projektträger Jülich (PTJ), Jahresbericht 2000
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Link-IconEnergy-saving modular facade system
Modulares Fassadensystem an der Südseite des Gebäudes in Frankfurt/Oder.
© bine.info
In this project information the "BINE News Service" reports on the solar center built according to the energy-efficient building method in Frankfurt/Oder. It is shown that the energy consumption for heating and illumination of an office building could be halved by means of a modular facade system. With both optimal daylight and fresh air supply an air conditioning system could be renounced.
Source:  BINE Information Service
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PDF-IconFacade Integration of Thermophotovoltaic (TVP) and Transparent Thermal Insulation (TWD) Modules with Insulating Boards
The project initiated by Sto AG aims to enable or simplify the integration of active and passive solar thermal converters by using suitable insulating boards. The boards can be fitted with the relevant thermal converters for their varying functions as a TVP device, hybrid facade element or passive TWD element. The project is being subsidised with government funds provided by the project management organisation Jülich.
Source:  Project Management Jülich, Forschungszentrum Jülich GmbHm Jülich GmbH, Projektträger Jülich (PTJ), Jahresbericht 2000
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Link-IconFrame for vacuum glazing
Das neue Rahmenprofil mit Dreifachisolierglas
© bine.info
A research group developed a thin, light plastic window frame with low insulation values which is suitable for the mass production of standard vacuum glazed windows.
Source:  BINE Information Service
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Project-IconInsulating materials of wood: Pneumatic processing of wood chippings and wood fibres to provide insulating material
Wood chippings can be transported using a pneumatic process and used as insulating layers for partitions. This concept for material handling on the construction site involves the filling of the processing machine with chippings from bulk containers. One person only is needed to set-up and operate the equipment.
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Source:  Federal Ministry of Education and Research (BMBF)
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Project-IconInsulating materials of wood: development of an economic process technology for the mechanical introduction of wood chips and wood fibre into wall and ceiling elements for insulation purposes
The results achieved with fibre-insulation material using a prototype plant formed a good basis for further development of the filling system and the final compressor. The vertical conveyors, the horizontal distribution system and the entire recycling system can be transferred to the plant at pre-serial production level. Expand…
Source:  Federal Ministry of Education and Research (BMBF)
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Project-IconInsulating materials of wood:The production of insulating material from chippings resulting from industrial planing processes
A trial device was created and tested on the basis of the results of investigations to establish the optimum device parameters. The device can be used to process chippings resulting from industrial planing processes to produce insulating material, while also the surface area quality of the processed components.

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Source:  Federal Ministry of Education and Research (BMBF)
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Project-IconLoose insulation materials made of wood: development of an economical and ecological processing plant of wood shavings as a thermal insulation material and a logistic system for wood shavings as a thermal insulation in bulk (Part 3 and part 4)
The system concept developed facilitates the energy-saving, low-cost production of insulation chips directly at their place of origin, and it is hoped that this can be integrated into existing operations with little effort.

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Source:  Federal Ministry of Education and Research (BMBF)
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Film: Cleaner Production Germany

- The Gateway to Environmental Technology
FONA Forschung fuer Nachhaltige Entwicklungen EN

Funded within the framework

Research for Sustainable Development