Sprung Instant Structures Ltd manufactures engineered relocatable and modular, large clear span multi-functional structures that add additional space immediately. The structures are engineered for long term use, include a 30 year pro-rata guarantee on the aluminum substructure and 20 year pro-rata guarantee on the architectural membrane and can be leased or purchased. No foundations are required; the structures can include complete 12-inch fiberglass insulation, and come at a significantly lower cost than conventional metal buildings.