Interior insulation retrofit of a brick wall using vacuum insulation panels: re- creation of cultural historical values in buildings from before 1945

Author(s): Pär Johansson, Paula Wahlgren
Paper category: Proceedings
Book title: Proceedings of the International RILEM Conference
Materials, Systems and Structures in Civil Engineering 2016 segment on
Historical Masonry
Editor(s): Inge Rörig-Dalgaard and Ioannis Ioannou
ISBN: 978-2-35158-178-0
e-ISBN: 978-2-35158-179-7
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 270-270
Total Pages: 1
Language : English

Abstract: The Swedish housing stock is once again in focus for national energy savings, as it was after
the oil crises in the 1970s. The need for renovation is equally urgent in older stocks of housing,
also in those that already have been renovated but are in need of further interventions. The first
part of this project concerns inventorying of building components in buildings from before 1945
in need of a second major renovation. The focus of the inventorying is energy performance,
moisture resistance, long-term durability and thermal comfort. The results from the inventories
will be used to investigate alternative and improved solutions for re-renovation to recreate e.g.
architectural details and cultural historical values. The possible thickness of the insulation layer
is limited by the existing construction. Vacuum insulation panels (VIPs) require less thickness
than conventional insulation materials to reach the same thermal resistance [1]. Therefore, it
could be more appropriate to use VIPs than conventional insulation materials when retrofitting
the building envelope of listed buildings. In a previous study [2, 3], a brick wall with wooden
beams was insulated on the interior with vacuum insulation panels (VIPs) in a laboratory. It
was shown that adding interior VIPs can reduce the energy use substantially in brick buildings.
Adding interior insulation decreases the temperature during the cold season, which results in
higher relative humidity. In the wooden beams, the moisture content increased more in the end
of the beam than close to the interior surface of the brick. There was no significant difference
between the RH in the wooden beam ends in the case with and without VIPs.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00