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.



00:00 – Introduction to Performance Membranes

00:36 – Welcome to the Build Insite Podcast

00:48 – Meet the Guests: Devin Grant and Joel Seagren

02:13 – The Importance of Wall Wraps and Vapour Permeable Membranes

04:44 – Understanding Airtightness and Ventilation

06:45 – Mechanical Ventilation and Building Code Requirements

09:01 – Water Management and Building Durability

12:11 – Encouraging Better Building Practices Across the Industry

22:19 – Range Hoods, Makeup Air, and Indoor Air Quality

28:37 – Conclusion and Preview of Next Week's Episode



This is a must-listen for anyone committed to lifting the standard of building in Australia—from better building envelopes to smarter ventilation strategies.



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