Abstract: The present invention entails an attic stair insulating cover made of a strong, lightweight insulating material such as polyurethane having a first insulating section and a second insulating section that are attachable to form a main insulating section. The insulating cover includes hinge assemblies that mount the insulating cover at the attic stair opening for positioning the attic stair insulating cover between an open and closed position. Each hinge assembly includes a partially hollow hinge arm that is molded onto the insulating cover. A removable axis pin connects the hinge arm to a block mounted adjacent to the attic opening. The hinge assembly axis is horizontally spaced from the main insulating cover and is also vertically spaced above the attic floor. A gasket recess extends along a bottom edge of the insulating cover with a gasket fitted into the recess and extending therefrom.

Abstract: A box-shaped enclosure, open on its bottom, pivotally mounted over an attic access stairway, so a foldable, downward stairway mounted in the opening, may be upwardly raised and stored therewithin.