Hygrothermal Performance Analysis of Unheated Zones in a Hımış 20th Century Heritage Dwelling
- Negin Jahed Tunalı (Conservation of Cultural Heritage, Middle East Technical University (METU), Ankara, Türkiye and UK Centre for Moisture in Buildings (UKCMB), London, UK)
- Peter Rickaby (UK Centre for Moisture in Buildings (UKCMB), London, UK and UCL Institute of Environmental Design & Engineering, London, UK)
- Yasemin Aktas (UK Centre for Moisture in Buildings (UKCMB), London, UK and UCL Civil, Environmental and Geomatic Engineering, London, UK)
- Ayşe Güliz Bilgin Altınöz (Conservation of Cultural Heritage, Middle East Technical University (METU), Ankara, Türkiye)
Abstract
This study investigates the hygrothermal performance of external wall insulation as part of the retrofit strategies included in four retrofit packages, examined on a traditional hımış house located in the cold climatic context of Güdül, Türkiye. Using WUFI Plus simulations validated by on-site monitoring, the research evaluates multiple retrofit scenarios in a heritage dwelling with a limited heated floor area. Results indicate that applying external wall insulation concurrently on both masonry and timber-framed zones amplifies moisture risks in unheated areas, particularly with masonry walls of low vapour permeability. In contrast, insulating only the timber-framed upper floors proved more effective, improving thermal comfort without elevating relative humidity levels. The findings underscore the importance of fabric-specific, moisture-sensitive retrofit approaches in hybrid structures.Keywords: Heritage retrofit, traditional buildings, energy efficiency, whole-house assessment, hygrothermal performance
How to Cite:
Tunalı, N. J., Rickaby, P., Aktas, Y. & Altınöz, A., (2025) “Hygrothermal Performance Analysis of Unheated Zones in a Hımış 20th Century Heritage Dwelling”, UCL Open Environment 7(S1). doi: https://doi.org/10.14324/111.444/ucloe.icmb25.a35
Rights: Author, [2025]
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