Having carried out chemical analyses aimed at identifying the binders and pigments used, we proceeded to fix the areas where the painted surface had lifted using a heat-reactivated thermoplastic resin in rectified petroleum.
We then set about repairing the joins between the various panels, using wooden elements matching the original materials. The areas where the wood had deteriorated were repaired with plugs glued into place using a vinyl adhesive. Disinfestation was effected by brushing on a solution of permetrine in trichloroethane.
The painted surface was then cleaned with solvent mixtures of nitro+dimethylsulfoxide. The removal of the reworked areas and of the darkened varnishes made it easier to interpret the texture of the painting. Once cleaning had been completed, lost areas were filled with plaster and glue and the painting was integrated with watercolours and a varnish finish. The final glaze was effected by applying Retoucher varnish in rectified petroleum with brushes and atomizers.