Deterioration is the natural process of degradation all material property undergo due to their environmental surroundings. The main factors may be physical, biological and chemical. Vandalism is a humankind aspect which causes deterioration.



Documentation is the accurate pictorial and written record of the constituent materials, the production techniques, the authorship, the state of preservation prior to the intervention, all procedures carried out (including the materials used) and any requirements for storage, maintenance, display or access.


Preservation is the indirect action to retard deterioration and prevent damage by creating optimal preservation conditions as far as compatible. This may include correct handling, transportation, use, storage and display. “Prevention is better the cure”.