Passivhaus Affiliate

2020 Retrofit Workstream

aerial photography of buildings at daytime   I Richard Horne

Retrofitting our existing buildings is our biggest challenge in getting to net-zero carbon in the built environment. We need to retrofit, on average, one home every thirty-five seconds between now and 2050. That is a massive challenge we are not even close to starting. We must start by understanding more about the problem – we know the principles of retrofit, but how far should we go? Do we go for different levels depending on the building type? How much is enough and how much will it cost?

The Passivhaus Trust has partnered with LETI, RIBA and the AECB to form a workstream to investigate these questions. The key is to ‘make retrofit real’. The workstream hopes to provide a clear picture of what needs to be done and what may be possible for tailored situations.

If you have a passion to find retrofit solutions and are interested in getting involved on a volunteer basis, please sign up to the Retrofit Workstream here. Within the retrofit topic, we have several different workstreams – at least one of which you might be able to help with! 


Retrofit Workstreams:

  • Background Research

  • Resource library

  • Practical Guidance

  • Bottom-up modelling

  • Top-down analysis

  • Decision making around Retrofit

  • Roadmap to 2030

  • Risks and Benefits of Retrofit

  • Monitoring and Data

  • Administration and support for all workstreams

Further Information

Retrofit Workstream

Passivhaus Retrofit Campaign

Passivhaus: a route to zero carbon

1st May 2020

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