A small format retail business building includes a modular enclosure with at least four insulated walls, an insulated roof disposed over the walls, and a facade located parallel to each wall and adhered to the roof. The roof can support at least about 20 pounds per square foot and the roof and the walls are encapsulated with an elastomeric multilayer system. The system includes a first curable elastomeric layer, a polymeric mesh disposed on the first curable elastomeric layer, a second curable elastomeric layer disposed on the polymeric mesh, at least one insulated door disposed in one wall, at least one drive up window disposed in one wall and a framed flooring comprising a curable elastomer.
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