The main goal of this work is to present a complete review of rising damp treatment in building heritage using a technique developed in our group to estimate and mitigate the height of the rising damp front and to predict the improvements of some experimental treatment techniques. The paper present a mathematical and a numerical analyse of the problem; an experimental and a practical application of the technique developed. This work is distributed into six main sections, in addition to this general Introduction: This book chapter is divided in several sections. Initially, it is presented the “state of the art” synthesis, where it is studied the techniques traditionally used for the rising damp treatment, showing the existing limitations on its application in monumental heritage and in old or ancient buildings, with specific characteristics. Then, it is performed the idea and the operating principle of the new technique, known as the wall base ventilation system, on the basis of previously conducted studies. An analytical, numerical and “in-field” study it is presented based in a case study described in detail. Finally, it is done a critical analysis of the results obtained, projecting the future work.