Project aims and fields of work

The laminated glass that is currently available for lightweight construction applications is especially efficient when it comes to use of resources in production compared to traditional window glass but is not suited for windows used in buildings. The degree of thermal conduction is too much and exterior sound cannot be dampened. That is why HarWin has taken it upon itself to further develop the existing laminated glass while simultaneously keeping weight as low as possible in order to ensure an optimum use of sunlight for the energy balance of modern and older buildings. HarWin is also intends to take the research project to the next step and the partners are striving for a direct industrial implementation of the results upon conclusion of the project.

The HarWin Consortium has set itself the following goals:

  • Development of new, lightweight composite materials for window glass and frames                                                                                                The laminated and coated glass panes combine light, heat, noise and humidity control. Fibre-reinforced structures ensure sufficient stability of window glass and frames. Computer simulations will be used to test the applicability of new windows in various types of buildings.

  • Integration of components for utilizing solar energy                             The layers that are used can transform UV light into visible light. Materials are also implemented which allow a reversible heat storage and release. Transmission, reflection and absorption of light and heat are adapted on both sides of the window to the desired level of comfort.
  • Life cycle assessment and performance analysis                               The durability of the new windows as well as the effectiveness of the individual components and the buildings are analyzed during the course of material and component development. The findings determine which materials and functions are to be selected and whether the new product should be integrated in different buildings.


The new windows should have the following characteristics:

  • Reduced weight
  • Reduced material usage
  • Lower energy consumption during their production
  • Usage of recyclable materials
  • Noise and heat insulation
  • Heat and moisture regulation
  • High strength and stability
  • High transparency
  • Size scalability for multi-purpose use

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