An Archaeological Challenge: The Conservation and Restoration of Luxury Roman Glass from Troia, Portugal

A set of eleven luxury glass archaeological objects dated to the 3rd century (Roman period) and excavated in Troia, Portugal, were treated in order to restore their shapes and decorative features. In this paper, the different stages of the treatment are presented and discussed. The treatment phases—...

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Main Authors: Inês Coutinho, Beatriz Borges, Stephen Koob
Format: Article
Language:English
Published: MDPI AG 2025-06-01
Series:Heritage
Subjects:
Online Access:https://www.mdpi.com/2571-9408/8/6/209
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author Inês Coutinho
Beatriz Borges
Stephen Koob
author_facet Inês Coutinho
Beatriz Borges
Stephen Koob
author_sort Inês Coutinho
collection DOAJ
description A set of eleven luxury glass archaeological objects dated to the 3rd century (Roman period) and excavated in Troia, Portugal, were treated in order to restore their shapes and decorative features. In this paper, the different stages of the treatment are presented and discussed. The treatment phases—cleaning, fragments’ assembly, and development of support structures for the objects in need—had to be adapted and the treatment outline had to be revised along the process because of the heavily weathered glass that showed extreme fragility. The treatment highlights the internal support structures—consisting of thin and light structures built with thin canes of glass—that were developed in borosilicate glass for three of the archaeological objects, ensuring their physical stability for handling and future exhibition. The structures were then attached to the archaeological glass with Paraloid B72 adhesive. The treatment of these outstanding artefacts and, in particular, the development of these structures heavily depended on interdisciplinary and teamwork that resulted in the completion of the treatment for all objects ensuring their future exhibition.
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spelling doaj-art-4eec2d24cddb466ebcdad4bb454a7a552025-08-20T03:27:26ZengMDPI AGHeritage2571-94082025-06-018620910.3390/heritage8060209An Archaeological Challenge: The Conservation and Restoration of Luxury Roman Glass from Troia, PortugalInês Coutinho0Beatriz Borges1Stephen Koob2VICARTE Research Unit, Department of Conservation and Restoration NOVA FCT, 2829-516 Caparica, PortugalVICARTE Research Unit, Department of Conservation and Restoration NOVA FCT, 2829-516 Caparica, PortugalThe Corning Museum of Glass, 1 Museum Way, Corning, NY 14830, USAA set of eleven luxury glass archaeological objects dated to the 3rd century (Roman period) and excavated in Troia, Portugal, were treated in order to restore their shapes and decorative features. In this paper, the different stages of the treatment are presented and discussed. The treatment phases—cleaning, fragments’ assembly, and development of support structures for the objects in need—had to be adapted and the treatment outline had to be revised along the process because of the heavily weathered glass that showed extreme fragility. The treatment highlights the internal support structures—consisting of thin and light structures built with thin canes of glass—that were developed in borosilicate glass for three of the archaeological objects, ensuring their physical stability for handling and future exhibition. The structures were then attached to the archaeological glass with Paraloid B72 adhesive. The treatment of these outstanding artefacts and, in particular, the development of these structures heavily depended on interdisciplinary and teamwork that resulted in the completion of the treatment for all objects ensuring their future exhibition.https://www.mdpi.com/2571-9408/8/6/209Troia (Portugal)archaeological Roman glasssevere weatheringtreatmentborosilicate internal support structures
spellingShingle Inês Coutinho
Beatriz Borges
Stephen Koob
An Archaeological Challenge: The Conservation and Restoration of Luxury Roman Glass from Troia, Portugal
Heritage
Troia (Portugal)
archaeological Roman glass
severe weathering
treatment
borosilicate internal support structures
title An Archaeological Challenge: The Conservation and Restoration of Luxury Roman Glass from Troia, Portugal
title_full An Archaeological Challenge: The Conservation and Restoration of Luxury Roman Glass from Troia, Portugal
title_fullStr An Archaeological Challenge: The Conservation and Restoration of Luxury Roman Glass from Troia, Portugal
title_full_unstemmed An Archaeological Challenge: The Conservation and Restoration of Luxury Roman Glass from Troia, Portugal
title_short An Archaeological Challenge: The Conservation and Restoration of Luxury Roman Glass from Troia, Portugal
title_sort archaeological challenge the conservation and restoration of luxury roman glass from troia portugal
topic Troia (Portugal)
archaeological Roman glass
severe weathering
treatment
borosilicate internal support structures
url https://www.mdpi.com/2571-9408/8/6/209
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