panel 13, condition of external surface

This photo shows that the support (colour
and degree of alteration) and the environment
(protected or not) have an influence on
degradation of Viacryl®.

Glass: hole and crater alterations, uniform weathering

Paint: no painting

Lead: good condition

Putty: dry and waterproof

Coating: hard, breakable, yellowed, flaking

Deposits: resumption of the corrosion process