K-tect Sustainable Building Systems makes a wall system that the company calls the “newest generation of structural insulated panels.“ Although not a sandwich panel, the system is kind of like rSTUD but different and more comprehensive. K-tect includes a light-gauge, metal-stud frame with insulation in a thermally broken assembly (see below) that improves thermal efficiency and controls noise.
Insulation is one tough nut to crack. As if you don’t already have several options and factors to consider, I thought I’d mention one more: natural wool insulation by Oregon Shepherd. The company makes batt (PermaBatt) and loose fill (PermaLoft) insulation products, and they both look pretty impressive on paper. Oregon Shepard believes they have the “only loose fill, blown-in wool insulation in the world.”
Alex Wilson, this year's winner of the Hanley Award for Vision and Leadership in Sustainable Housing, selected EnGuard Insulation by Vita Nonwovens as the BuildingGreen Product of the Week following Greenbuild in Chicago. The 100% polyester insulation product is made with recycled plastic bottles, or, more specifically, 15% post-consumer and 35% pre-consumer recycled content.