An insulating wall assembly, including a framework having opposite interior and exterior sides and including a plurality of vertical and horizontal support studs defining an inner spacing within the framework, a substantially rigid insulating panel mounted to the framework, and an insulating material extending in the inner spacing and juxtaposed to the rigid insulating panel. Each one of the vertical and horizontal support studs has an outer stud member having a thickness t1 and an inner stud member mounted inwardly to the outer stud member and having a thickness t2 thinner than the thickness t1. The substantially rigid insulating panel is supported peripherally by the inner stud members with the outer stud member circumscribing the rigid insulating panel.