Abstract: An insulated covering for building sheathing comprising foam insulation shaped to occupy the area between raised construction panels and the building sheathing and sized to leave narrow air-gaps, horizontally and vertically, between the outside surfaces of the foam insert and inside surfaces of the raised aspects of the construction panel. The panels are secured to the building in a manner that allows the foam insert to float, freely, within the raised panel. The inserts provide the panels with enhanced structural durability and improved insulating qualities. Allowing the insert to float freely within the raised panels prevents annoying noises and panel deformation caused when tight fitting foam insulation expands during rapid temperature changes and warm weather. A foam insert shaped to accomodate simulated shake roof aluminum roofing panels is illustrated.