Patent ID: 7421826

Claim:
A cavity wall construction comprising: a foundation; an inner wall extending upwardly from the foundation; wherein the inner wall is comprised of a plurality of generally parallel and evenly spaced vertically extending studs; an outer wall supported upon the foundation, having an inner face confronting an outer face of the inner wall and being generally parallel to and spaced from the inner wall to define a cavity therebetween; wherein the outer wall is comprised of courses of masonry material held together with mortar between the adjacent courses; a corrugated board positioned between the inner and outer walls and covering a substantial portion of the outer face of the inner wall to inhibit the mortar from contacting the inner wall; a plurality of channels in the corrugated board permitting the escape of fluid trapped in the cavity; a plurality of generally linear spines in the corrugated board, each spine being interposed between an adjacent pair of the channels and being in confronting contact with the outer face of the inner wall; wherein selected spines of the corrugated board are aligned with one of the studs of the inner wall; wherein the inner wall further comprises: a sheathing board attached to the plurality of studs and forming the outer face of the inner wall; and a plurality of anchors each coupled to the outer wall located in one of the selected spines and joining the corrugated board to the associated stud.