The restoration and conservation works involved the roof of the tiburium, which was in poor conservation conditions due to structural settlements and water infiltration.

The restoration works included:

• the reconstruction of the roof covering following the consolidation and integration of the secondary supporting structure;
• the installation of a waterproof layer on a new wooden decking surface to protect the existing traditional roof tiles (embrici) discovered during the works;
• the reconstruction of the roof covering using a double batten system, with metal anchoring of both the roof tiles (coppi) and the underlying tiles (sottocoppi) through suitable intermediate support rows.