Patent ID: 7818922

Claim:
An insulator system of a building having a roof with a plurality of spaced-apart support members, comprising: an insulation sheet having a foam insulation layer having a lower side and an upper side; the insulation sheet having a radiant heat barrier layer bonded in flush contact with an entire upper side of the foam insulation layer; a plurality of ribs formed in the insulation sheet, each rib having a concave lower side and a convex upper side, with the concave lower side receiving and being fastened to an upper side of one of the support members of the building; a flat roof panel secured to the support members over the insulation sheet, the roof panel being in flush contact with the convex upper sides of the ribs; an exterior roof covering element secured to an upper side of the roof panel; a ventilation channel having an upper surface defined by the roof panel, a lower surface defined by the heat barrier layer and side edges defined by the ribs that are adjacent each other such that radiant energy from exterior of the exterior roof covering element passes through the exterior roof covering element, the roof panel and the ventilation channel and strikes the heat barrier layer without passing through another heat barriers layer; and at least two roof vents on the building in communication with opposite ends of the ventilation channel for venting air from the channel.