A common phenomenon
Capillary rise is a characteristic of old buildings, especially those directly built on land that is not sufficiently watertight, before the current building standards came into force. This can also affect far more recent infrastructure, with hydro-insulation that is either damaged or deteriorated.
Osmosis: a physical principle
Depending on porosity, building material can turn out to be a conductor of soil humidity. The rise of humidity through these materials is caused by a natural osmosis phenomenon, linked to the thrust of the Earth’s electromagnetic field: the polarity change between walls (positive charge) and soil (negative charge) generates the capillary rise of water within walls. Such moisture can rise up to 1.5 meters and even reach a height of 5 meters, leaving extensive damage behind.