Stained Glass Conservation at Cologne Cathedral

The Cathedral of Cologne, whose history can be traced back to earliest Christian times, ranks among the most outstanding examples of Gothic architecture worldwide. Since1996 the cathedral is part of the UNESCO world-heritage. The foundation stone for the present gothic construction was laid in 1248, but it was not until 1880 that the completion could be celebrated.

Due to the long-lasting time of construction the building material consists of different types of stone, mainly trachyte, sandstone, shell-limestone, limestone and basalt. Dependent on their individual durability all stones suffer decay by air pollution, most seriously the sandstone. Stonemasons and stone conservators are ceaselessly occupied with works of repair and consolidation.

The cathedral also houses a large amount of stained glass windows, originating from very different periods, beginning in the late 13th century up to the recent past. Important cycles date from about 1300, 1500 and 1850. According to the variety of age, the deterioration problems differ considerably. In order to ensure a permanent care, a staff of 10 people is concerned with the surveillance and maintenance of in the windows, including conservators, glass painters, glaziers and an art historian. Their scope of duties comprises the treatment of actual conservation problems - such as micro cracked glass -- and the construction and installation of protective glazing. Besides, staff members are also concerned with research on methods and materials for stained glass conservation. Among other the workshop was involved in the EU-funded projects of research "VIDRIO", "CONSTGLASS" and "TeACH".

Within NANOMATCH, staff members will participate in lab tests to evaluate the performance of the products (WP3) and will be also involved in WP4 with restoration SMEs and RTD partners in the test activities in Cologne Cathedral, e.g. technical support of measurements, mounting of instruments and devices and survey in situ. Furthermore, the glass conservation staff very expert in this field will act as leader of subtask 4.4.3 for the evaluation of the treatment of stained glass on site. Besides HDK will contribute to the dissemination of results making use of their good connections in the national and international field of cultural heritage preservation.

Subprogramme Area: Development of advanced compatible materials and techniques and their application for the protection, conservation and restoration of cultural heritage assets
Contract type: SP1-Cooperation. Collaborative project. Small or medium-scale focused research project. FP7-ENV-NMP.2011.3.2.1-1
Grant Agreement No. 283182
Duration: November 2011 - October 2014




Dr. Adriana Bernardi

Head of Padova Unit Institute of Atmospheric Science and Climate National Research Council (CNR-ISAC)
Corso Stati Uniti 4, 35127 Padova, Italy
Phone +39 049 8295906
E-Mail: a.bernardi@no-spam.isac.cnr.it



Federico Nogara
DG Research & Innovation, Unit 1.3
CDMA 03/058
Rue du Champ de Mars, 21
B-1049 Brussels
Telephone: +32-2-298 46 50
Telefax: +32-2-295 05 68
Email: federico.riogara@no-spam.ec.europa.eu