I'm furring out a wall on the exterior around a entry door,plan on putting some 1" by strapping over existing sheathing then put new plywood sheathing to bring wall out to new level around door area.my? Is should I put house wrap on original sheathing for air sealing since strapping May have air leaks ,then put another layer on new exterior sheathing for weather barrier?or wold one layer on new exterior be ok.