Over the past 20 years, the possible usage of disperse and colloid systems of organic consolidation agents as well as mineral systems with particle size in nanodimensions in the context of cultural heritage care has been examined. Nanomaterials, with particle size of up to 1μm whose properties are at a certain intersection between properties at the level of molecules and mass are the subject-matter of extensive scientific research for their positive physical and mechanical properties such as high chemical efficiency, excellent plastic, consolidation and diffusion
properties, low sintering temperature, cleaning capabilities and others. Nanomaterials whose consolidation efficiency has been tested by experimental research, include, in particular, hydroxide nanodispersions. The article summarises basic conditions for application and principles of efficiency of selected nanosystems for consolidation of historic lime-based porous materials, i.e. in particular lime-based plasters that form integral part of historic buildings.