Effectiveness of energy refurbishment measures applied to high-rise dwellings.

From 1953 to 1975, some half a million high-rise flats were constructed in the UK in response to the need at that time for the rapid provision of substantial numbers of affordable dwellings. For a variety of reasons, including environmental and social problems, many of these buildings were subsequently demolished. However, many housing authorities still own a considerable number of high-rise developments which, while structurally sound, will require to be upgraded if they are to continue in service for rental purposes. In Scotland alone, there are over 52,000 high-rise flats, representing about 8% of the total available public sector housing. This paper reports on an environmental monitoring exercise carried out to assess the effectiveness of a extensive refurbishment, which included thermal over-cladding and heating system replacement, to a development of24-storey buildings in Glasgow, Scotland. Monitoring of temperature and relative humidity was carried out in flats in a pre and post-refurbishment block over a three-year period to evaluate the effect on occupant comfort levels and condensation risk. A limited energy use comparison was also carried out. An analysis of the monitored data indicates that the refurbishment has been successful in achieving its objectives, namely improved environmental conditions at a reduced overall energy cost to the tenants.