ERO ARCHITECTURAL DRAWING

 

 

 

 

The drawing presented here is one of two stored together, however the conservation of this one only is presented here.

 

The drawing had been stored in a rolled format and was therefore heavily curling, and had some creasing and planar distortion. There were several large tears present, some missing areas, and the corners were tatty and dogeared. The object had been previously lined with a heavy, soft-fibred, textured paper. This lining was delaminating in areas, and some air pockets existed. The brown ink present was thought to be iron gall ink, which later testing heavily suggested it was. The inks were fugitive on the recto, and the pH testing indicated a pH of 5.5. There was also surface dirt present, and an embossed stamp in one corner to be aware of during treatment.

 

A soft brush and chemical sponge were used to clean the recto, and a brush on the verso only to prevent abrasion of the soft lining paper.

To carry out repairs more easily, the object was humidified and flattened. Infill and tear repairs were carried out using a Griffin Mill paper for both. This was deemed acceptable for use on the tear repairs as the object was to be stored rolled again, and therefore would require a heavier paper on the tear repairs, to prevent further damage from future rolling and unrolling. Gelatin was used as the adhesive instead of wheat starch paste as the moisture content is lower and this was preferable due to the presence of iron gall ink. Infill repairs were made to the verso, but also had some Spider tissue adhered to the recto where deemed necessary. Weak areas on the verso of the drawing were reinforced using Spider tissue, and pasting through with 2% Carboxy Methylcellulose.

 

Above: Infiill repair to one corner of the document.

 

The drawing was to be stored rolled up once more, thus an enclosure was created by sealing one side of two sheets of Melinex together, and rolling the drawing up sandwiched between the two. This was held in position with linen tape and the item’s label on the outside of the roll:

 

 

 

 



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