Burns Monument was completed in 1823 as the first monument to commemorate the internationally celebrated poet Robert Burns. A comprehensive programme of monitoring, research and investigation was initiated to develop a repair strategy using an innovative lime-grouting methodology to shed water and allow previously trapped moisture to escape by evaporation from the wall surfaces. The in-wall performance was assessed using probes measuring temperature and relative humidity pre- and post-intervention. This case study presents the approach taken and the successful outcomes achieved through the integration of innovative conservation techniques, offering valuable insights for the sustainable, long-term preservation of this historic building.