How does indoor environmental quality in green refurbished office buildings compare with the one in new certified buildings?

Jang Young Lee*, Pawel Wargocki, Yiong Huak Chan, Liu Chen, Kwok Wai Tham

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A cross-sectional study was conducted in Singapore to investigate whether buildings refurbished to attain the Green Mark (GM) standards present measurable improvements to indoor environmental quality (IEQ) that are also manifested by the occupants with respect to their level of satisfaction and health symptoms. Comparative analyses were performed with buildings that are GM-certified since day one (GMN), buildings refurbished to GM standards (GMC) and conventional buildings which could not receive the GM certification (NGM). A one-week field measurement of selected IEQ parameters and post occupancy surveys of satisfaction and health symptoms of 367 occupants in 14 office buildings revealed that GMC buildings exhibited levels of IEQ, satisfaction and health symptoms similar to GMN buildings. Both categories of buildings had superior IEQ compared with NGM buildings. Apart from parameters affected by limitations of refurbishment related to façade, this study found that enhanced IEQ performance to the level as high as GMN buildings’ can be achieved by converting existing conventional buildings to GM-certified buildings through green refurbishment in the context of office buildings in Singapore.
Original languageEnglish
JournalBuilding and Environment
Volume171
Pages (from-to)106677
Number of pages12
ISSN0360-1323
DOIs
Publication statusPublished - 2020

Keywords

  • Indoor environmental quality
  • Green mark
  • Green building
  • Refurbished building
  • Post occupancy evaluation
  • Acute health symptom

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