The three discuss the personal Passive House advocacy of both Mahnaz and Robert, the product innovations and design guidance offered by ROCKWOOL, and the application of mineral wool in two major projects (the Ken Soble Tower retrofit in Ontario and the Winthrop Center Passive House office tower in Boston). After their interview, cohost Matthew Cutler-Welsh catches up with Robert in person at the PhiusCon 2022 conference in Chicago.