Tiles from Aosta: A Peculiar Glaze Roof Covering
The 18th century roof tiles from the “Casa delle vigne”, located in the Aosta region (north-east Italy), were investigated as an example of a peculiar historical roof covering: ceramic tiles with a lead-based glaze finishing to waterproof them are used to create colourful patterns. A conservation pr...
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| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Colorants |
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| Online Access: | https://www.mdpi.com/2079-6447/2/3/26 |
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| author | Eleonora Balliana Eugénie Marie Claudine Caveri Laura Falchi Elisabetta Zendri |
| author_facet | Eleonora Balliana Eugénie Marie Claudine Caveri Laura Falchi Elisabetta Zendri |
| author_sort | Eleonora Balliana |
| collection | DOAJ |
| description | The 18th century roof tiles from the “Casa delle vigne”, located in the Aosta region (north-east Italy), were investigated as an example of a peculiar historical roof covering: ceramic tiles with a lead-based glaze finishing to waterproof them are used to create colourful patterns. A conservation project proposed the integration of the original tiles with new ones, produced according to traditional methods. Ancient and new tiles were analysed with Fiber Optics Reflectance Spectroscopy, micro-Raman, Fourier Transform Infrared Spectroscopy and X-ray Fluorescence Spectrometry, Thermogravimetry and Differential Scanning Calorimetry for understanding the composition and the production technology of this manufacture. Their resistance to freezing and thawing cycles was then tested, considering their exposure in the severe alpine climate of Aosta. The use of pure clays with low calcium contents, high firing temperature and lead-rich glazes was found in ancient tiles, able to outstand several freezing-thawing cycles without damages. Iron and copper pigments were used in old yellow and green glazes. Zinc-based pigment, low lead and calcium-rich glazes are used in the new ones, which remained mainly coherent to the ceramic body during the freeze-thaw test. |
| first_indexed | 2024-03-10T22:54:41Z |
| format | Article |
| id | doaj.art-e0b6309e38024dc49a02098c70ab3799 |
| institution | Directory Open Access Journal |
| issn | 2079-6447 |
| language | English |
| last_indexed | 2024-03-10T22:54:41Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Colorants |
| spelling | doaj.art-e0b6309e38024dc49a02098c70ab37992023-11-19T10:06:44ZengMDPI AGColorants2079-64472023-08-012353355110.3390/colorants2030026Tiles from Aosta: A Peculiar Glaze Roof CoveringEleonora Balliana0Eugénie Marie Claudine Caveri1Laura Falchi2Elisabetta Zendri3Department of Environmental Sciences, Informatics, Statistics, Ca’ Foscari University of Venice, Scientific Campus—Via Torino 155, 30170 Venezia Mestre, ItalyDepartment of Environmental Sciences, Informatics, Statistics, Ca’ Foscari University of Venice, Scientific Campus—Via Torino 155, 30170 Venezia Mestre, ItalyDepartment of Environmental Sciences, Informatics, Statistics, Ca’ Foscari University of Venice, Scientific Campus—Via Torino 155, 30170 Venezia Mestre, ItalyDepartment of Environmental Sciences, Informatics, Statistics, Ca’ Foscari University of Venice, Scientific Campus—Via Torino 155, 30170 Venezia Mestre, ItalyThe 18th century roof tiles from the “Casa delle vigne”, located in the Aosta region (north-east Italy), were investigated as an example of a peculiar historical roof covering: ceramic tiles with a lead-based glaze finishing to waterproof them are used to create colourful patterns. A conservation project proposed the integration of the original tiles with new ones, produced according to traditional methods. Ancient and new tiles were analysed with Fiber Optics Reflectance Spectroscopy, micro-Raman, Fourier Transform Infrared Spectroscopy and X-ray Fluorescence Spectrometry, Thermogravimetry and Differential Scanning Calorimetry for understanding the composition and the production technology of this manufacture. Their resistance to freezing and thawing cycles was then tested, considering their exposure in the severe alpine climate of Aosta. The use of pure clays with low calcium contents, high firing temperature and lead-rich glazes was found in ancient tiles, able to outstand several freezing-thawing cycles without damages. Iron and copper pigments were used in old yellow and green glazes. Zinc-based pigment, low lead and calcium-rich glazes are used in the new ones, which remained mainly coherent to the ceramic body during the freeze-thaw test.https://www.mdpi.com/2079-6447/2/3/26local coloured glazeceramic tilesfreeze-thaw resistanceheritage tradition |
| spellingShingle | Eleonora Balliana Eugénie Marie Claudine Caveri Laura Falchi Elisabetta Zendri Tiles from Aosta: A Peculiar Glaze Roof Covering Colorants local coloured glaze ceramic tiles freeze-thaw resistance heritage tradition |
| title | Tiles from Aosta: A Peculiar Glaze Roof Covering |
| title_full | Tiles from Aosta: A Peculiar Glaze Roof Covering |
| title_fullStr | Tiles from Aosta: A Peculiar Glaze Roof Covering |
| title_full_unstemmed | Tiles from Aosta: A Peculiar Glaze Roof Covering |
| title_short | Tiles from Aosta: A Peculiar Glaze Roof Covering |
| title_sort | tiles from aosta a peculiar glaze roof covering |
| topic | local coloured glaze ceramic tiles freeze-thaw resistance heritage tradition |
| url | https://www.mdpi.com/2079-6447/2/3/26 |
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