Over the course of time paper, parchment and artistsí media deteriorate by undergoing chemical and physical changes. One set of changes in objects often leads to another and on the whole if neglect sets in, the damage can be irreversible.
These are some of the problems that may arise:
Damp / mould which can destabilise the pigment and cockle the parchment or paper support
Humidity and temperature changes
Wood burn caused by poor quality mount board
Staining caused by foxing
Poor hinging methods within the mount such as sellotape and masking tape can cause terrible damage