The Built Environment

Mould, Moisture Control & Airtightness in Modern Construction

February 9, 2026·1h 46m
Episode Description from the Publisher

Dean sits down with former builder and Passive House tradesman now working with Pro Clima, Stewart Scholten from Scholton Group, to talk about membranes, moisture management, airtightness and the shift happening in Australian construction.Stu shares his journey from carpentry apprenticeship through high-end residential construction, working with Bellavarde, delivering the first certified Passive House in the Northern Rivers, and transitioning into building science and product education.This episode is about understanding how better detailing, better science and better collaboration can lead to longer lasting buildings.In this episode:Why WRBs and membranes have become critical under recent NCC updatesThe difference between cladding and the true waterproofing layerRisk reduction in modern buildingPassive House principles and what builders can learn from themAirtightness and why it mattersWhat a WUFI analysis is and why it’s becoming essentialThe role of mechanical ventilationNatural materials vs synthetic materials in moisture managementEducation gaps in the building industryWhy site management and collaboration matter more than everLinks & Resources:Check out the Scholten Group: https://scholtengroup.com.au/Smart Plus Academy https://smartplusacademy.comPassive House Institute https://passiv.deAustralian Passive House Association https://passivehouseaustralia.orgPro Clima – Building envelope systems https://proclima.comHosted by Dean Ipaviz, builder & director at Verdecon, creating high-performance, low-impact homes across Australia. Follow Dean Ipaviz and @_thebuiltenvironment on Instagram and visit thebuiltenvironment.com.au

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