For the evaluation of the increase of resistance of masonry following the application of innovative intervention techniques, such as the reinforcement with inorganic matrix composite materials (FRCM), diagonals tests and sonic tests were carried out in a building in Milan. The shear strength of the connections, with threaded rods grouting with chemical anchor, between the metal plates and the masonry surface, was also determined. For the testing of the new slabs a series of load tests were finally carried out.