Abstract
The first part of this two-part paper is about work undertaken with my husband, Hans Allbäck, to create conditions in which we could continue to use historic windows and doors. During the 1980s and 1990s the Swedish authorities, in association with window and glass manufacturers, wanted people to change to modern triple-glazed windows to save energy and achieve improved noise reduction. In order to to sell our services for renovating and protecting old houses, we therefore required scientific evidence of the performance of original doors and windows in use. In collaboration with Professor Bertil Fredlund of Lund Institute of Technology we have been able to provide a number of answers.
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