This publication summarizes the methodology designed by the Direcci—n Desconcentrada de Cultura of Cusco (DDC-C) and the Getty Conservation Institute for the stabilization and protection of the wall paintings of the church Santiago Ap—stol de Ku–otambo prior to the start of the siteÕs retrofitting. The methodology includes the description and condition survey of the wall paintings, their significance, and a proposal for their stabilization and protection. The latter includes methods of selecting appropriate earthen grouts to reattach and consolidate decorated surfaces in situ, as well as the design of a protection frame used during construction. This publication was compiled as part of the Seismic Retrofitting Project, which combines traditional construction techniques and materials with advanced methodologies to design and test seismic retrofitting techniques and maintenance programs to improve the structural performance of earthen historic buildings in Peru and other countries in Latin America.