2. Problems to solve

2.1 Winter behavior

The aim is to define how the wall will behave in winter and to determine :

• whether or not there is condensation on the plaster;

• the type of condensation: superficial and/or internal;

• their quantity, if any, and the plane in which they occur;

• the indoor relative humidity (HR _i ) which must not be exceeded to prevent the wall becoming the site of surface condensation or internal condensation.