Several professionals are providing expert guidance to designers for selecting raw materials used in repair projects. Expert guidance is provided to designers for locating the cause of deterioration, comprehensive consideration of all factors that have an impact on the compatibility of the selected material, with the concrete substrate, and proper functioning of the repaired element in its service environment. Expert guidance is also provided on the selection of complex system-assembly of a structure that needs to be considered, while undertaking concrete repair projects. Experts suggest that the selection of repair materials also need to be based on their compatibility with the concrete substrate, their intended use, and the method of application. Some of the significant properties of repair materials that need to be considered, include fatigue, creep, thermal conductivity, thermal expansion, and flammability.