Metoda przenoszenia sgraffit na przykładzie fragmentu sgraffita z Zagrodna

A vast number of sgraffitoes got destroyed due to a lack of the method to transfer them on a new base. Attempts were made to employ a distacco method, widely used to transfer paintings. However, this method appeared improper and unsuitable in the case of sgraffitoes. A fundamental problem lies in a rough texture of sgraffito and plasticity of its surface. An insulating layer and putty were introduced for facing. The use of an insulating layer made it possible to remove safely protections, while putty guaranteed the maitaining of surface’s plasticity during the treatment. As it was necessary to introduce an insulating layer a difficulty had also to be overcome of tight bonding of a watersoluble adhesive with an adhesive soluble with organic solvents. It is generalny known that there is no adhesion between such adhesive agents. The method was tested on an original object by transferring a detail (167X112 cm) of a Renaissance sgraffito in Zagrodno, Legnica voivodship. The transfer made is 1,5 cm in width, which will allow its location in the original place and the levelling of the remaining sgraffitoes with the surface. Because a photogrametric method registering in three dimensions is not suitable for sgraffitoes for technical reasons, the method of documenting sgraffitoes was also discussed. Silicon resin was used for that purpose, with a cast of sgraffito and then an X-ray photo recording three dimensions being prepared. To document uneven creased surface a technique of the allocation of isobates, used in cartography, was employed. This alllows to draw contour lines informing of irregularities in relation to the even surface. The said method ensures a safe transfer of sgraffitoes. It may also be applied to transfer reliefs, uneven plasters and stucco works. When working this technique out, the simplest, generally available conservation materials were taken into account.