Passivhaus Architect, GIl Shalom joins Mark Millar at the Fix Radio studios to have a longer conversation and get into more depth with regards to the Passivhaus standard and building method. Gil talks about retrofitting and renovating to reach Passivhaus certification, compared to building groun up. Gil talks about materials, the role heat pumps and EPC ratings play, the history of Passivhaus and goals for the future with regards to new build.