– Firstly, water from the highest levels of the walls to which it has risen slowly begins to move towards the lower parts.

– In the initial phase of the system, when the damp inside the walls starts moving, it can result in an increased evaporation of damp into the space that causes increased atmospheric humidity. This change of dehydration indicators may be visible on the building, but not necessarily. Because of this phenomenon, it is necessary to ensure good ventilation of the space which is important in the process of dehydration, at least in the first weeks of the system operation.

– During the dehydration process, the surface parts of the walls are the first to dry up. Thus, the damaged materials (paint and plaster) increasingly flake and fall off. It is also one of the indicators of the changes that occur due to building dehydration.

As a result of the dehydration process, materials often change colour (become brighter) and become smoother to the touch.