In this special bonus episode recorded at the PhiusCon 2021 conference in Tarrytown, New York, Passive House Podcast co-host Zack Semke interviews Ilka Cassidy, frequent guest host of the Passive House Podcast and co-founder of Holzraum System. 

Thank you to ROCKWOOL North America for underwriting our interviews at PhiusCon2021.  https://www.rockwool.com/north-america/ 

View a video version of this episode at: https://youtu.be/bZ7mvPppMT4

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