Exterior, Cabin Building Type, House Building Type, Gable RoofLine, and Prefab Building Type A small airspace separates the building's aluminum skin from the wall underneath. The aluminum acts like a heat sink during the day: it absorbs heat but remains thermally separated (by the narrow gap) from the Element House walls.  Search “little-feet-off-the-grid.html” from Cool Design Beats Hot Weather Any Day

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A small airspace separates the building's aluminum skin from the wall underneath. The aluminum acts like a heat sink during the day: it absorbs heat but remains thermally separated (by the narrow gap) from the Element House walls.