Restoration department consists of the following restoration workshops and laboratories:
Specialists in the Archeological material and metal restoration workshop restore historical and archeological metal of various states of conservation (iron, copper, silver, tin, lead, zinc and their alloys), coin deposits, heterogeneous materials as well as archeological wood, splints, basts, birch-barks, leather and bone. Specialists use mechanical, chemical and electrochemical methods to restore these materials.
Polychrome wood restoration specialists work with polychrome wooden sculptures, painted wood, painted dowry chests and other household objects made of wood as well as wicker-works made of splinters, wicker and stems and unpainted household objects. The wooden objects are also disinfected and preserved.
Furniture restorer works with all types of furniture, makes a missing piece of a furniture or reconstructs separate parts as well as upholsters the furniture.
Research laboratory carries out microscopic research, microchemical analysis, thin layer chromatography and color tests on all types of materials. Collaborating with the specialists from the University of Latvia and Riga Technical University infra-red and UV spectroscopy, emission spectrum analysis and microbiological analysis are done.
Textile restorers clean and disinfect all types of textile materials. They also restore archeological and ethnographical textiles, knittings, crochets, embroideries, applique works, bobbin lace textiles and macramé textiles, cloth made in different techniques, church textiles, carpets and tapestries.
Ceramics and glass object restoration specialist works with glazed and unglazed pottery, porcelain and faience objects with decorations under or over the glaze, glass objects, archeological handmade and wheel-made pots with various levels of glazing as well as archaeological glass and ceramic object fragments.
Document, book and graphics restorers work with graphics, works in water-color and gouache, oil paintings on paper and cardboard, maps, wallpapers, color or black -and – white printed materials, parchment bindings, charters and illuminated parchments, leather bindings, books of various bindings and albums, manuscripts done by using different inks, Indian ink, pencil and seals. They also restore three-dimensional objects made of paper.
Painting restorer works with all types and styles of easel-paintings. She improves the color and priming layer on various surfaces e.g. canvas, wood, cardboard and paper as well as restores the lacquer, removes over – paintings, deformations and surface duplication.