Unreinforced masonry structures are a common building type in Iran due to the low cost of the materials and constructions, yet, deficiencies were noted in recent years regarding its' performance against strong earthquakes. Due to the importance of serviceability in building such as schools and governmental institutions, repairing the said structures seemed to be the more proper choice. The application of steel-reinforced shotcrete (SRS) is studied in the past as a retrofit technique, however, little attention was paid to this method as a repair technique. Two URM wall specimens were tested twice in this investigation to assess the influence of opening in the specimens' damping property. The results indicate a significant increase in the force capacity of the SRS applied walls. The SRS increased the energy dissipation of the walls and lateral stiffness at the same time. The equivalent damping of the SRS applied walls and URM walls were reported as equal in drifts of up to 0.5%.