Abstract: A device for insulating the slab foundation of a building, said device comprising: a generally horizontal insulating section disposed between the slab foundation and a footer of a building, said horizontally disposed insulating section comprising a generally elongated cuboid shape having at least one cutout through which a concrete column is disposed; said prefabricated device further comprising a generally vertical insulating section disposed adjacent to said horizontal insulating section and attached to said building.

Abstract: A device for insulating the slab foundation of a building, where the device includes: an asymmetric three sided water repellent layer having a sloped portion; an insulating layer, adjacent to and within the water repellent layer; and an insect repellent layer disposed against one side of the insulating layer between the water repellent layer and the insulating layer.

Abstract: A device for insulating the slab foundation of a building, said device comprising: a generally horizontal insulating section disposed between the slab foundation and a footer of a building, said horizontally disposed insulating section comprising a generally elongated cuboid shape having at least one cutout through which a concrete column is disposed; said prefabricated device further comprising a generally vertical insulating section disposed adjacent to said horizontal insulating section and attached to said building.

Abstract: A device for insulating the slab foundation of a building, said device comprising: a generally horizontal insulating section disposed between the slab foundation and a footer of a building, said horizontally disposed insulating section comprising a generally elongated cuboid shape having at least one cutout through which a concrete column is disposed; said prefabricated device further comprising a generally vertical insulating section disposed adjacent to said horizontal insulating section and attached to said building.

Abstract: A thermal barrier for reducing heat transfer through the slab foundation of a building, said thermal barrier comprising: a substrate; a first attachment means disposed at the top of said substrate for attaching said thermal barrier to a building; an insulating sheathing attached to said substrate; a reflective layer disposed between said sheathing and said substrate; and a second attachment means for attaching said apparatus to a building, said second attachment means disposed adjacent to one side of said sheathing and against said substrate.