The possibility of proceeding to long lasting conservation of the tuff stonework of the monuments of Herculanum must be the fruit nowadays of global plans and projects, which see restoration operations as normal practice, avoiding the previous approach of seeing such interventions as an extraordinary matter. It is important that these interventions also take into account prevention systems against the damage that time, wear and atmospheric agents cause every day on the structures after they have been restored. In the past, in Herculanum, these problems were dealt with efficiently by small maintenance operations carried out by well trained workers. It is thus logical to propose that such previous types of intervention be included in a global strategy, aimed at a careful and thorough analysis of the real motives of degradation of the stonework.