moisture control

The importance of moisture control in indoor environments is increasingly recognized Air humidity affects buman bealth and comfort, and it is also connected to the durability of several building components and to energy efficiency. In many cases, it is possible to control the level of humidity with passive solutions, taking advantage of the moisture buffering capacity of hygroscopic materials. Nevertheless, current standards do not give any prescriptions on this matter.

The airtightness of inclined roofs is important in order to avoid hygrothermal problems and to guarantee the durability of the construction itself. Previous research in building physics showed that perfect airtightness of inclined roofs is difficult to achieve and maintain. In practice, air transport through the construction, i.e. in/exfiltration, cannot be avoided due to for example imperfections or bad workmanship. The heat and moisture conditions in the building component are strongly influenced by advection, i.e.