Volume W Springback binding is in good condition, as is the Tudor paper substrate which is strong and flexible EXCEPT where it has been affected by water and mould. Both corners of every page are in a very fragile state and the volume cannot be made accessible
Approximately half of the pages have been trimmed across the corners at some point in the past, a response to the damage caused by water/mould attack, and the other half have been previously repaired.
Three types of old repair are apparent:
1.Heavy square cut cartridge paper applied to the lower corner, verso and recto to approx half of the pages
2. Patches of Glassine, discoloured and brittle applied on top of cartridge paper repairs
3. A grey tissue paper repair. Some of the pages have all three types of repair present, and applied to weak, water/mould softened substrate
Removal of these historic repairs was felt to be unnecessarily invasive and posed considerable risk to the softened substrate. Although the weight of the repairs was causing mechanical damage and also distorting the shape of the text block, there was little or no apparent chemical deterioration associated with them apart from the glassine patches.
Due to the fact that the Tudor paper was so soft and vulnerable to water, a way of supporting them using the bare minimum of water would need to be used. Remoistenable tissues were found to pose least risk.
Three types of new repair were developed, to be used when appropriate:
1.Support mould damaged corners verso with Tengujo 9gsm to bridge to stable paper, remoistenable tissue made using wheat starch paste
2. Infill losses using Kozo 23g
3. Face recto using remoistenable tissue where surface of substrate is compromised. A machine made 5gsm Kozo
MAKING REMOISTENABLE TISSUES
9gsm Tengujo was brushed out onto Melinex using dilute wheat starch paste and left to dry
5gsm Kozo is very delicate and so can be brushed onto the Melinex with a very soft brush to deliver the very dilute paste or sprayed on using a Muji sprayer containing very dilute wheat starch paste.