Patent ID: 8683767

Claim:
A heat barrier comprising adjustable width insulating foam plastic rails, reflective insulation panels and gasketing elements assembled into a single layer or multi-layer stack of reflective dead air spaces within cavity spaces between wooden framing members of a building having said reflective insulation panels inserted in a slot cut along the length of each of said foam plastic rails installed within said cavity spaces between said wooden framing members on opposite sides of said cavity spaces so that said reflective insulation panels are supported in said slots between said wooden framing members in parallel with a floor, wall, or ceiling of said building with said dead air spaces ended by said gasketing elements extending between said wooden framing members at ends of said reflective insulation panels, each foam plastic rail comprising a pedestal section and a receptacle section, said receptacle section and said pedestal section together formed with said slot in between for providing said support for sides of said reflective insulation panels inserted therein.