The electrical potential which originates when water rises in a masonry wall causes water molecules to wander always from the positive to the negative pole. This natural principle of Electro-Osmosis was discovered by the physicist Reuss some 200 years ago and adapted by Lectros during the mid 1970s for the drying out of walls. Since then, this method has been constantly subjected to comprehensive series of tests and just as constantly adapted to the current state of the art. Dry walls - and thus a proper level of living quality - can be attained easily and with 100% certainty by using the Lectros Osmotic system.