An insulation batt is provided. The insulation batt includes an elongated blanket of fibrous insulation material adapted to be positioned entirely within a wall cavity. The elongated blanket has a face portion and edges defining a blanket width that is within the range of from about 102 percent to about 107 percent of the known nominal width of the wall cavity. A facing material is attached to the face portion of the elongated blanket of fibrous insulation material. The insulation batt has a stiffness characterized by an angle measurement that measures the amount of deflection of the insulation products as the insulation batts are draped over a support located perpendicular to the longitudinal center axis of the insulation product. The stiffness measurement is within the range from about 15 degrees to about 35 degrees. The width of the facing material and the width of the blanket are approximately the same.