It is the update and extension of the 4 vols., Curso de patología. Conservación y restauración de edificios, edited by the COAM in the years 94/95. The objective pursued by the work is to establish criteria a l when restoring a building in order not to forget to recover all its historical and artistic values, that is, to maintain its integrity. Theory and history, methodology, pathology and technical t of intervention: structural elements, facades...