In Episode 32 Part 1 of the Build Insite Podcast, we’re live from the Circa Studio at Bowens Hardware in Port Melbourne with two brilliant minds shaping the future of high-performance building—Devin Grant from Performance Membranes and Joel Seagren from Fantech. This episode dives into the science and practicality behind performance membranes, mechanical ventilation, and airtight construction. From wall wraps and vapour-permeable membranes to the necessity of makeup air and smart water management, Devin and Joel unpack the real-world benefits of better building systems—including enhanced energy efficiency, improved durability, and healthier indoor environments. If you're a builder, designer, or anyone invested in raising construction standards across Australia, this episode is packed with the insights you need to build smarter and healthier.