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.  Photo 11 of 20 in 16+ Prefab Homes in the Middle of Nowhere by Luke Hopping from Cool Design Beats Hot Weather Any Day

16+ Prefab Homes in the Middle of Nowhere

11 of 20

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.