This episode provides lessons and thoughts on DIY deep retrofit and radical remodeling for space and amenities.

We visit a 1975 timber frame house, in the western highlands of Scotland, that has been retrofitted to EnerPhit standard, to speak with Es Tresidder, Passivhaus Consultant of John Gilbert Architects, and Ben Adam Smith, self-build expert. They will take a critical look at what worked well on the project, what could be done differently, and the scope for a DIY-led approach to deep retrofit of this building type.