The order of importance is not the order in which they are layered: * https://www.buildingscience.com/documents/insights/bsi-001-the-perfect-wall https://www.b

The order of importance is not the order in which they are layered: * https://www.buildingscience.com/documents/insights/bsi-001-the-perfect-wall https://www.buildingscience.com/documents/insights/bsi-001-t... If you wish to argue against Joe Lstiburek, a PhD who has been doing building science for probably over thirty years (both academic research and field work/consulting), go right ahead. He has taken failures into account because a good portion of his career has been studying / consulting on failures: * https://www.youtube.com/watch?v=rkfAcWpOYAA&t=25m26s https://www.youtube.com/watch?v=rkfAcWpOYAA&t=25m26s