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According to the final report of the European Union OMC expert group on strengthening cultural heritage resilience for anthropogenic climate change, the impacts of climate change, particularly extreme weather events, on cultural heritage in Europe have become increasingly evident in recent years and are progressing at an unprecedented speed and scale. Archaeological sites, museum collections, and historical buildings and structures are affected, among others, by rising temperatures or by heavy storms and precipitation events. Deep scientific knowledge about future climate projections is required to develop appropriate preservation strategies and measures to protect and adapt cultural heritage. In this paper we present the first set of results of the KERES project. The project focuses on the impacts of future extreme climate events on the built heritage and historic gardens. An ensemble of climate simulations is used to analyze changes in both climatology and extreme events for several climate variables at two cultural heritage sites in Germany. In this study, a methodology was developed to guide climate scientists on how to better tailor climate information for the needs of stakeholders in the cultural heritage sector. It would help the stakeholders to integrate the results of climate projections into the prevention and emergency management, in particular for the risk assessment of extreme events. The effects of interpolation from a model grid to a location of cultural heritage site and advantages of an ensemble approach have been demonstrated in the study.

We present two recent test case application examples of a new high-performance insulation panel with product name SLENTITE® used as core element of a rendered internal wall insulation system. The first case study refers to the 18th-century building Alte Schäfflerei now the Fraunhofer Centre for Conservation and Energy Performance of Historic Buildings, at the monastery Benediktbeuern, southern Germany, where SLENTITE® was applied in 11/2017. The second test case was installed in 04/2019 in a heritage building situated in the historic center of Luxembourg. In Benediktbeuern, a single layer of insulation material was chosen, in Luxembourg we applied two layers of insulation. In both cases, detail work around the windows was a main task and we gained experience on product processing under real conditions. In terms of indoor room usage, the object in Benediktbeuern is used as exhibition hall with rare traffic and well controlled climate, whereas the object in Luxembourg is used as meeting room without climate control. Measured data of 20 months from the object in Benediktbeuern and first impressions of the performance in Luxembourg are discussed.

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The Jesuit church of Holy Name of Jesus from year 1667 is integral part of main square of Telc with Baroque houses from 17th century listed in UNESCO World Heritage Site since 1992. The natural indoor climate of Jesuit church is heated only in occupied pews during liturgical ceremony in winter season. The hygrothermal analysis of natural indoor climate in Jesuit church is performed by preventive conservation method of Target range and Historical climate in period from April 2017 to October 2018. The obtained result shows appropriate indoor climate for preventive conservation of historical furniture (main altar, lateral chapels, pulpit, confessional, organ, paintings), holy remains and valuable artefacts for liturgical ceremony. This hygrothermal analysis of natural indoor climate in Jesuit church supports current state of local heating in occupied pews during liturgical ceremony in winter season.

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