Worldwide, there is a vast but fragile earthen heritage that is barely surviving due to serious damage of the fabric. It is generally believed that natural agents are the overall cause for the decay of earthen heritage. However, when thoroughly evaluating, it can be observed that conservators' interventions have a major impact, which leads to question current approaches to conservation and the reasons why intervention mistakes are repeated and why successful conservation results are still scarce. The research methodology of this investigation is based in a case study strategy analysing three...