With restoration the path taken reverses, to deal firstly with the object and then with the design. In this process, awareness of the material nature of the built assumes great importance because construction often constituted the central theme of design for many protagonists of the 20th Century. The material history of architecture is addressed along three main lines: the history of the materials, the history of the construction site and the history of the construction systems. Every building is conditioned by how these three components overlap. Systematic and thorough representation of these will give rise to a monographic study which describes it precisely. The method leads to identification of the problems presented by a building through scientific analysis and at the same time the method can be used to select, clearly interpret and identify the elements that one has decided to conserve, highlight or complete.
Keywords: Material nature of buildings; monographic study; scientific analysis