Thermal Bridge Behavior and Reduction Performance of Timber Panel Joints in Existing Building Remodeling

So-Min Lee; Jeong-Hun Lee

doi:10.22696/jkiaebs.20260011

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2026 Vol.20, Issue 2 Preview Page Next Page

Research Article

Thermal Bridge Behavior and Reduction Performance of Timber Panel Joints in Existing Building Remodeling 노후 건축물 리모델링을 위한 목재 패널 접합부 열교 거동 및 저감 성능 분석

30 April 2026. pp. 120-131

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Abstract

This study quantitatively evaluated the thermal bridge reduction effects at major envelope junctions when wood panel remodeling was applied to aged reinforced concrete (RC) frame buildings. Experimentally measured thermal conductivity values of timber under varying relative humidity conditions were used as input data, and two-dimensional steady-state heat transfer analyses were conducted in accordance with ISO 10211. The investigated junctions included planar wall sections, wall–floor slab junctions, window installation details, and roof–parapet junctions. The results indicated that increasing relative humidity led to a consistent increase in thermal transmittance in planar wall sections, whereas changes in the linear thermal transmittance of junctions were relatively limited. This suggests that junction-level thermal bridge performance is governed more by insulation continuity and junction configuration than by variations in material thermal properties. Furthermore, wood panel remodeling significantly reduced linear thermal transmittance at most junctions and improved the interior surface temperature factor, contributing to both thermal bridge mitigation and reduced condensation risk. These findings provide fundamental reference data for thermal bridge–aware envelope retrofitting strategies in existing buildings.

Keywords

Thermal bridge

Linear thermal transmittance

Wood panel remodeling

Condensation

Green remodeling

키워드

열교

선형열관류율

목재패널 리모델링

결로

그린 리모델링

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Information

Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
Publisher(Ko) :한국건축친환경설비학회
Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
Journal Title(Ko) :한국건축친환경설비학회논문집
Volume : 20
No :2
Pages :120-131
Received Date : 2026-02-09
Revised Date : 2026-03-05
Accepted Date : 2026-03-05
DOI :https://doi.org/10.22696/jkiaebs.20260011

Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

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