DIY 1960s EnerPHit retrofit

Wookey has been dramatically improving the sustainability and comfort of his home since 2007, mainly by DIY, aiming for the EnerPHIt, Passivhaus Retrofit, standard. He describes the principles and shows numerous details and things to avoid.
This online tour is part of Open Eco Homes 2021: https://cambridgecarbonfootprint.org/open-eco-homes-events

00:00 Intro, summary and principles
08:16 Boiler, Solar Thermal, Loft, PV
15:44 Thermal Bridges, Airtightness, MVHR
26:37 Skeilings, Eaves, Internal Wall Insulation
30:15 External Wall Insulation, Perimeter Insulation
35:56 Extension, Workshop
46:57 Costs, Outcomes, Advice
52:08 Q&A
1:07:00 Closing Slides and a few more questions