Izodom 2000 Polska is a Polish family-owned firm (since 1991) that provides a complete building system for energy-efficient and passive houses. Their method uses polystyrene-block “shells” (insulated forms) that are assembled like building blocks (system called IZOClick®), then filled with concrete — forming the structural walls and delivering excellent thermal insulation, minimal thermal bridging, and long-term energy savings. Thanks to this “prefab shell + concrete” technology, construction is much faster than traditional masonry, and houses built this way consume a fraction of the energy of typical buildings.