Rising damp is one of the most recurrent and well-known hazards to existing buildings and monuments. Several types of intervention exist to tackle the problem. Among these, the creation of a damp-proof course against capillary rise by means of injection of chemical products is one of the most diffused methods, thanks to the relatively easy and cheap application.

Despite positive results when applied under controlled conditions in the laboratory, these interventions do not always deliver the desired result in practice. Several studies have shown varying degrees of success. Various factors, like the lack of homogeneity of the substrate and a high moisture and salt content, may affect the effectiveness of treatments. Moreover, the type of substrate and the combination of materials with different pore size distribution influence the spreading and the effectiveness of chemical products.

Read more via Science Direct.