Moisture and mould in buildings have become fairly common problems in Italy, particularly since regulations aimed at energy conservation have been enforced in the seventies. Results of a case study conducted within IEA Annex XIV are presented in this paper. Two flats belonging to the same building (one with and the other without moisture problems) have been monitored during the winter 1987-88. Indoor temperature and air humidity, wall surface temperature and weather parameters were recorded for several weeks using two automatic data loggers.
Annex 14 -Condensation and Energy- started in April 1987, with a take of meeting in Utrecht, The Netherlands. The annex itself was born after a moisture-workshop in September 1985 at the Laboratory of Building Physics, KULeuven, Belgium.
The work is concerned with measuring interzone air movement and investigating its effect on condensation in a traditionally built house. Air flows through a doorway between the lower and upper floors of a house were measured using a single tracer gas technique. To study the effect of temperature difference on interzone air flows, the lower floor of the house heated to various temperatures in the range of 18-350C using thermostatically controlled heaters.
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