While styrofoam may be most commonly associated with disposable coffee cups, meat trays and packaging, prefab home manufacturer Japan Dome House Co., Ltd. uses it to construct easy-to-assemble modular kit homes.
Dubbed the “habitat for the 21st century,” the Dome House is an igloo-shaped structure built from snap-together wall sections made of 100% expanded polystyrene foam (styrofoam). It might seem like an odd choice of material for a house, but the company lists a number of advantages that styrofoam has over traditional materials. Unlike wood and metal structures, for example, the styrofoam Dome House does not rust, rot or attract termites. It is also highly resistant to earthquakes and typhoons. In addition, the walls, which are treated with a flame retardant, emit no toxic fumes in a fire. (link)