The Institute of Cultural Heritage Preservation in Saxony (LfDS) addressed the issue of the process of decontamination, very early on, and initiated a first DBU project in 1998. Some of those early findings lead to widely accepted and successful approaches of decontamination such as the vacuum approach or the masking approach. Other technologies were not able to take hold due to lack of financing or not being able to prove being successful. Different approaches were used simultaneously on cultural heritage, in order to receive a long term comparison in efficiency and sustainability of those decontamination technologies. A range of decontamination approaches with its strengths and weaknesses are being presented. In many cases one cannot expect a complete decontamination which requires therefore monitoring and possibly further measures. With the construction of two WTA leaflets about decontamination of cultural and historical heritage a better understanding of thus was sought for building experts as well as the owners (WTA, 2013). The leaflets provide an overview of the noxious substances and provide possibilities and methods of detecting contamination through wood preservatives. They conduce to the evaluation of risk of possible contamination and assist with
planning appropriate measures. In particular, they explain possibilities as well as limits of the different approaches.