Research conducted in Rome and its territory has revealed, in recent years, impressive traces of the changes, dated between the end of the 4th and the middle of the 2nd century BC, which lead to a complete renewal of urban material culture, determining the transition from the structures known from the age of kings to those typical of the Late Republican age. These changes, which can be read above all on clay objects, not only concern the pottery classes, but all goods made from terracotta, especially roof coverings and other clay elements linked to architecture. In fact, during the Republican age, a profound innovation in the construction habits of the archaic and late-archaic age is documented, thanks to the technological knowledge transfer/influence of workers of Campanian origin. The latter contributed significantly to the creation of mixtures more suited to increasingly complex and larger projects carried out between the Middle and Late Republican era.