Using electroosmosis technology, we apply a small voltage between two electrodes. On the wall to be repaired, we place several platinum-plated anodes that are connected to a grounded conductor through a small power supply. The process forces water from the walls to be drawn toward the cathode (the ground conductor) and prevents more water from rising through the walls. 

As water withdraws from the structure, it takes with it most of the salts deposited inside, salts that we see on the walls, even on the floor as "sweats" of active moisture. The salts or "saltpeter" deposited inside the walls are what cause the biggest problem.

Salt crystals shrink in size during the day as they dry out from home heating or the sun. At night, as the temperature drops, humidity generally increases and salts absorb water from within the walls and from the air, causing them to expand. 

This process is why damp homes often have loose paint and in more extreme cases, plaster, cement or even tile or stone veneer falls off and floors lift due to the destructive effects of the deposited salts.