Purkaa vai korjata? Hiilijalanjälkivaikutukset, elinkaarikustannukset ja ohjauskeinot

Translated title of the contribution: To demolish or to repair?: Carbon footprint impacts, life cycle costs and steering instruments

Satu Huuhka, Terttu Vainio, Malin Moisio, Emmi Lampinen, Mikko Knuutinen, Samuel Bashmakov, Arto Kölliö, Jukka Lahdensivu, Paula Ala-Kotila, Pertti Lahdenperä

Research output: Book/ReportBook (author)Professional

Abstract

The reform of the legislation on building and construction also prepares for a transition towards low-carbon building. In the future carbon reduction must be taken into account in the whole life cycle of a building, i.e. in new building and renovation and in demolition. The stages in the life cycle are intertwined when we consider the renovation of the existing buildings and demolition followed by new building as the alternative approaches.
This report summarises the carbon footprint and life cycle impacts of the renovation and development of buildings compared to demolition followed by new building. For the most part the analysis is limited to individual buildings. Scientific research information on carbon footprint impacts has been collected from Finland and from other countries with similar climate conditions as we have in Finland. New calculations that combine carbon footprint impacts and life cycle costs were made to fill gaps in the available information. The case studies concerned the complete renovation and possible extension of a school building built in the 1950s and renovation of an apartment building built in the 1970s and adding storeys to it. The impacts of solutions based on the existing buildings are compared with the
impacts of constructing completely new buildings. Information was also produced on steering instruments that would give more preference to low-carbon solutions when making decisions between complete renovation and demolition followed by new building.
Based on the case studies, complete renovation is more effective than demolition followed by new building as a means to reduce emissions in the next few decades, which will be crucial in terms of the fight against climate change and the adaptation to it. However, more research information is still needed on the total impacts of the urban structure as a whole. The steering instruments concerning low-carbon building should include measures to encourage renovation instead of demolition
Translated title of the contributionTo demolish or to repair?: Carbon footprint impacts, life cycle costs and steering instruments
Original languageFinnish
PublisherMinistry of the Environment
Number of pages129
ISBN (Electronic)978-952-361-221-1
Publication statusPublished - 18 Feb 2021
MoE publication typeD5 Text book, professional manual or guide or a dictionary

Publication series

SeriesYmpäristöministeriön julkaisuja
Number2021:9
ISSN2490-1024

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