5. Humidity in the building

This somewhat simplistic definition should not obscure the fact that the wall is the forced passage of a multitude of constraints that oppose the outside to the inside: condensation, overpressure, capillarity, etc.

Moisture is responsible for the majority of building losses, and its presence must be analyzed in order to establish a sound diagnosis - a solid foundation for building pathology. Knowing the source of the moisture enables effective action to be taken.

Humidity has four possible sources:

• constitution water ;

• horizontal seepage water ;

• water from capillary rise;...