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Przebieg konserwacji portalu Berrecciego na Wawelu

100%

Majewski M., Marzec M.

Ochrona Zabytków

1989

issue 1

47-52

The portal by Berrecci at the Wawel Castle is one of the finest examples of Renaissance architectural sculptures in Cracow. It dates back to 1534—1535. The present form of the portal comes from the reconstruction period in 1786. Only top part of the object, made from Pińczow limestone, belongs to Renaissance. The remaining parts, forged in sandstone, are not original and their sculptural ornamentation is much poorer. Originally, the whole of the portal was polychromed and partially gilded. A number of conservation and laboratory studies as well as bibliographical and archival searches were made prior to conservation, which allowed to draw assumptions and conservation guidelines and to choose techniques and materials. The basic task of conservation procedure was to eliminate causes of the damage and to consolidate the old substance of the object. This aim was served by prophylactic and technical conservation procedure. To reconstruct the missing parts the best materials applied today in the conservation of stone sculptures were used. Bayplan, a specialized research centre, typed out organic silicon compounds such as Steinfestiger OH — to reinforce the stone and Steinfestiger H - for structural hydrofabization. Apart from qualitative and quantitative analyses of salinity carried out by Bayplan laboratory, samples from other places of the object were also examined in Analytical and Chemical Laboratory of the Academy of Fine Arts in Cracow. The analysis showed the presence of Na+, K+, Ca+ 2 and Mg+ 2 cations as well as CI“ , S0 4~2, N03— and CO3-2 anions. A percentage salt content ranged from 0.33% to 2 % The obtained results of the studies induced the conservators to desalting. A technique of free migration of salt to expanded environment was employed in practice. In view of a utilitarian function of the portal and its representative character, the aim of artistic measures was to restore to the object its former grandeur. On the basis of sounding studies it was possible to reconstruct a general colouristic concept of the portal and facade from the time of its baroque reconstruction (1786). New make-ups of a sculptural form and polychromy were subordinated to the historic substance of the object. Missing parts of the stone that were of constructional importance were added and elements that decided of an aesthetic appearance of the portal were chosen. The final stage of the conservation was a colouristic arrangement of the object and environment (plaster of the facade, side gates). One of the four designs presented at the meeting of the conservation commission was realized. The designs were based on results of bibliographical, conservational and laboratory studies.

Konserwacja tumby Piotra z Bnina w katedrze włocławskiej

80%

Brochwicz Z., Domasłowski W.

Ochrona Zabytków

1965

issue 4

58-63

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2 Ochrona Zabytków

1 Brochwicz Z.

1 Domasłowski W.

1 Majewski M.

1 Marzec M.

1 1989

1 1965

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Przebieg konserwacji portalu Berrecciego na Wawelu

Konserwacja tumby Piotra z Bnina w katedrze włocławskiej