Monitoring the effects of draught elimination.

Describes a retrofit carried out on a building of 36000 m3 volume in Northern Italy which eliminated air infiltration around windows using silicone caulking. The energy balance of the building was evaluated experimentally before and after the retrofit. Verifies the impact of unwanted air infiltration on a building's energy use. States that the analysis of the experimental data made it possible to extend the results obtained from town houses by other authors to apartment buildings.