Thermally isolated roof structure

Claim 1

A ventilated roof structure for maintaining the outside surface of the roof of a building at the ambient outside temperature irrespective of the heat flow through the roof of the building comprising in combination: a base structure forming at least one generally plane surface over the roof area of a building; a corrugated insulating panel supported on and fastened to said base structure and constructed from a material of sufficient strength and thickness to support a roof covering structure thereover and to hold nails driven therein, said corrugated panel having a plurality of generally parallel base structure engaging first elongate strips adapted to be fastened to said base structure, said first strips connected along their elongate edges to riser strips which riser strips connect at their edges opposite from said first strips to second elongate strips, which second elongate strips comprise a plurality of generally parallel roof covering engaging strips positioned alternately with said first strips so as to comprise a panel having ventilating air passages parallel to said strips and between said riser strips both above said first strips and below said second strips; and roof covering structure fastened only to said second elongate strips.