Attic Knee Walls Description Guide describing how to insulate and air-seal attic knee walls and floor joist cavities under knee walls.
Rigid Foam Insulation for Existing Exterior Walls Description Guide describing how to apply an air control layer directly over existing wall sheathing and cover with two layers of insulating sheathing held in place by vertical furring strips.
Roof/Attic to Exterior Wall Air Control Upgrade Description Guide outlining how to retrofit an exterior wall and/or attic to provide continuous air sealing.