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Testing a new method for VIP interior insulation for heritage buildings

: Bichlmair, Stefan; Krus, Martin; Kilian, Ralf

Arfvidsson, Jesper (Ed.) ; Univ. Lund:
NSB 2014, 10th Nordic Symposium on Building Physics : 15-19 June 2014, Lund, Sweden; Full Papers
Lund, 2014
ISBN: 978-91-88722-53-9
Nordic Symposium on Building Physics (NSB) <10, 2014, Lund>
Conference Paper
Fraunhofer IBP ()

In old traditional buildings and even more in listed, historic buildings energetic refurbishment has to be planned thoroughly. For small rooms it may be of advantage to use thin and high efficient internal wall insulation systems like vacuum insulation panels (VIP). These systems have the best ratio of thickness to insulation, but they are also absolutely diffusion tight. This tightness makes a VIP system sensible to air leakage and air flows behind the panels. Also the mounting of interior insulation mostly affects disadvantageously the original surfaces and plasters. In case of valuable buildings this can lead to restrictions in retrofitting energy saving measures such as interior insulation.
A special focus is therefore put on reversible application in historic buildings. Refurbishments in old and valuable buildings should be carried out without or at least minimal damage to original surfaces and plasters compared to typical mounting systems. The presented mounting system reduces possible damage to original surfaces and plasters if a removal is necessary. The new system uses an additional layer between interior insulation and original surfaces to protect the surface and enable a save fixing.
The interior insulation system also has been tested experimentally to assess the influence to the original surface and possible damages to the plaster. Therefore the original surface was evaluated before mounting and after removal of the VIP interior insulation. The performance of the interior insulation was measured for one heating period.
This paper highlights the concepts of reversible application of the system. Also the measured data of the interior insulation and comparison of the simulation results with the measured data are shown.