Wall paintings consist of three basic parts, the layer of painting, the plaster ground and the wall / masonry support.

The type and extent of deterioration and / or damage of wall paintings depends mainly on environmental conditions.

The process of restoring wall paintings is usually long and complicated and involves the cleaning of the painting layer, consolidation of the painting layer and the plaster ground, detachment of wall paintings, if necessary, and the creation of new supports for the detached wall paintings.