A Dutch early 20th century vase made in the Plateelbakkerij
Diameter ca. 35 cm.
The object was deteriorating fast due to soluble salts. In this
type of deterioration, salts accumulate behind the glazed surface
and recrystallize with increases in volume due to absorbed water
and water of crystallization. The mechanical forces produced by
these recrystallizing salts can ultimately detach the glaze from
the underlying ceramic body; as was clearly seen on this
Treatment carried out:
Some fragile glaze had to be temporarily consolidated so the vase
could be desalinated.
After desalination the damaged areas were consolidated, filled
and then retouched.
Photos of the completed treatment, click on the image for a larger
1. The object before treatment
2. A heavliy damaged area before treatment
3. The same area after treatment
4. This picture shows the salts efflorescence through the
craquelée in the glaze
5. & 6. Showing more of the damage caused by the salts
subflorescences; pushing the glaze off of the ceramic body from the