Patent ID: 7743584

Claim:
A method for forming a spacer assembly for an insulating glazing unit; the method comprising the steps of: (a) providing an inner spacer member having an outer surface, a bottom wall and sidewalls; (b) providing an outer spacer member having a corrugated surface; the outer spacer member being disposed in a flat configuration; the outer spacer member having a nonmetallic body; the outer spacer member having a longitudinal direction; the outer spacer member being provided with stress relief areas located where the outer spacer member will be bent longitudinally; and (c) wrapping the outer spacer member from the flat configuration around the inner spacer member to a wrapped configuration wherein the outer spacer member is disposed adjacent to at least two of the walls of the inner spacer member; step (c) including the step of forming at least one longitudinal bend in the outer spacer member when the outer spacer member is wrapped around the walls of the inner spacer member.