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Life-Cycle Costs of a Minimally Invasive Refurbishment Approach in Comparison to a Standard Refurbishment

  • Paul Schweizer Architects

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The decision on constructing or renovating buildings is often based on construction costs; consequently, follow-up costs are not considered. Life-cycle cost analysis is a common method for assessing the economic viability of buildings over their entire life-cycle. In this project, life-cycle costs of a minimally invasive refurbishment with component activation are compared with those of a standard refurbishment approach with an external thermal insulation composite system (ETICS) and radiators. Although the follow-up costs approximate the life-cycle costs after a period of 50 years in this analysis, the additional erection costs of the minimally invasive refurbishment approach cannot be compensated. In order for the system to become economically competitive, the erection costs regarding the facade system and the associated building technology must be reduced by 36 %, assuming that the nominal follow-up costs remain the same. Since the current implementation is still a prototypical one, cost-saving potential is expected on basis of the experience of the executing companies. However, in addition to the economic efficiency, the non-monetary added value of the system in the form of a more homogeneous heat output, more ecological building materials, less stress for the inhabitants due to the minimally invasive approach, reduced use of floor space and increased sound insulation due to the sound insulation facade, should also be taken into account in the decision-making process.
Original languageEnglish
Title of host publicationSUSTAINABLE BUILT ENVIRONMENT D-A-CH CONFERENCE 2019 (SBE19 Graz) 11–14 September 2019, Graz, Austria
Subtitle of host publicationConference Proceedings
PublisherIOP Publishing Ltd.
ISBN (Print)978-3-85125-684-0
DOIs
Publication statusPublished - 2019
EventSustainable Built Environment D-A-CH Conference 2019: Transition Towards a Net Zero Carbon Built Environment, SBE 2019 Graz - Graz University of Technology, Graz, Austria
Duration: 11 Sept 201914 Sept 2019
https://www.tugraz.at/events/sbe19/home/

Publication series

NameIOP Conference Series: Earth and Environmental Science
PublisherIOP Publishing Ltd.
ISSN (Print)1755-1307

Conference

ConferenceSustainable Built Environment D-A-CH Conference 2019: Transition Towards a Net Zero Carbon Built Environment, SBE 2019 Graz
Abbreviated titleSBE 2019
Country/TerritoryAustria
CityGraz
Period11/09/1914/09/19
Internet address

Keywords

  • Costs
  • Decision making
  • Sound insulation
  • Sustainable development
  • Thermal insulation
  • Building technologies
  • Cost saving potentials
  • Decision making process
  • Ecological building materials
  • Economic efficiency
  • Entire life cycles
  • External thermal insulation composite systems
  • Life cycle cost analysis
  • Cost benefit analysis

Classification according to Österreichische Systematik der Wissenschaftszweige (ÖFOS 2012)

  • 201128 Sustainable building

Applied Research Level (ARL)

  • ARL Level 7 - Principle in use

Research focus/foci

  • Sustainable Materials and Technologies

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  • Wohnen findet Stadt - Hallein

    Heidenthaler, D. (CoI) & Leeb, M. (CoI)

    15/10/1628/02/21

    Project: Funded research

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