Microscopic techniques (LM, SEM) and a multi-analytical approach (EDX, FTIR, GC/MS, Py-GC/MS) to characterise the decoration technique of the wooden ceiling of the House of the Telephus Relief in Herculaneum (Italy)

The acquired data revealed that a tempera painting has been applied. Egg was used as binder, whereas lime, red and yellow ochre, and caeruleum were used as white, red, yellow and blue pigments, respectively. The paint was directly applied onto the wood surface. Some decorations involved the application of gold leaf: unfortunately, no trace of the mordant or adhesives was found. The results also highlighted some issues related to the state of preservation of the artefact, thus contributing to the planning of conservation strategies.