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biological protection of wood 

When carrying out conservation works on wooden buildings in open-air museums: roof truss, walls, ceilings, floors and woodwork, the technical and aesthetic aspects of the activities should be taken into account. When implementing measures aimed at effectively stopping the progressive process of destruction and securing the object against further destruction, it should be remembered that they should not affect the antiquity and authenticity of the object.
In all conservation works, follow the assumptions of the Venice Charter, which says that the monument should not be reconstructed - the original substance of the structure and materials should be respected. All newly added elements of a historic building should be distinguishable from the original. Where it is impossible to use traditional technologies, it is acceptable to use proven modern technologies. Building fragments from all stages of construction should be protected.

Due to the specificity of objects (wooden, large-size) exhibited in the open air, and in order to obtain the greatest possible efficiency, it is necessary to perform the treatments in the period from the beginning of May to the end of August. This is related to the biologically defined life cycle of insects as well as the appropriate temperatures at which biocides and impregnating agents should be used. Occurring frosts may cause, among others, cracking of the foil, weakening of the chemical agent's effect, and thus the lack of effectiveness of the treatments.

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