The Problems evidenced in Knossos:
- the degradation of selenite (mineral gypsum). This material is particularly sensitive to a number of factors, relative humidty being the most important
- salt accumulation and efflorescence in sheltered areas due to incompatibility of adjacent materials (i.e. selenite/cement interface,) applied in different periods and conditions and/or to the presence of humidity c.
- dark encrustations and other external accumulations A number of encrustations of different colour, texture and origin can be found on the surface of the Knossos monuments
- degradation of mortars
- degradation of reinforced concrete.
