The gone up moisture by capillarity indicates the migration of Vapeur in a building since the basement and which evaporates. Its flow of evaporation depends on the room temperature and the hygrometrical rate of the air.

It is noticed that the limit of moisture is in the shape of waves. This moisture is present in all the thickness of the wall, it as well reaches the totality of the building the walls of frontages, of partition and the partitions, sometimes the grounds.

It is not always easily visible.

The presence of the capillary increase is due to the meeting of several factors:

• the absence of levelling course seals
• an underground drainage duct lower part the building
• a water which contains rock salt
• an electric charge in the walls
• a ground with capillaries

The friction of subterranean water against materials creates a waveband natural who will charge water electrically, this electric charge will give him the force necessary to assemble in the capillaries of the ground then walls and ground.

As long as moisture did not evaporate: it goes up, sometimes very high.

See too

• Condensation