"Modelling approach is the most accurate way of looking at a building. The overall performance really needs to be modelled." In this episode of pro clima podcast, Darryl shares insights from his experience with energy-efficient building projects, including the Piha EnerPHit renovation and the Legacy House. He talks about the importance of improving the performance of existing homes in New Zealand, proposing standardized systems to facilitate retrofitting. Darryl highlights the challenges of addressing issues like condensation moisture management and airtightness in the Building Code. He emphasizes the need for a holistic approach to building design, advocating for increased industry skills and the adoption of modelling approaches to ensure overall performance of buildings meets high standard and comfort. Special Guest: Darryl Sang.