David Svoboda deals with the restoration of wall paintings, sgraffito and mosaics. He also specializes in digitizing and photographing works of art and collectors' items. He is a lecturer and organises courses in historical art techniques such as sgraffito, mosaic and mural painting.

Petr Hampl is a painter, restorer and lecturer of art courses. In addition to restoring wall paintings, he also restores mosaics, paints paintings, creates original mosaics, teaches mosaic, sgraffito and fresco techniques at art courses.