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| In ], corrugated paperboard cores were tested with various skin materials of plywood, tempered hardboard and treated paperboard. The building was deconstructed in ] and most of the panels retained their original strength with the exception of paperboard which is unsuited to outdoor exposure. Panels consisting of polystyrene core and paper overlaid with plywood skins were used in a building in ] and the panels have performed well to the present day. | In ], corrugated paperboard cores were tested with various skin materials of plywood, tempered hardboard and treated paperboard. The building was deconstructed in ] and most of the panels retained their original strength with the exception of paperboard which is unsuited to outdoor exposure. Panels consisting of polystyrene core and paper overlaid with plywood skins were used in a building in ] and the panels have performed well to the present day. | ||
| Then in the early ] Haddock, a former construction manager for the ], began research on a cement skinned panel system to withstand the harsh Alaskan climate. Haddock has used the panels to construct an 18,000-square-foot ] showroom and a 32,000-square-foot church, and at trade shows Haddock parks a 3,400-pound pickup truck on a 24-foot-long foam panel ramp which remains straight. | Then in the early ] Haddock, a former construction manager for the ], began research on a cement skinned panel system called ] to withstand the harsh Alaskan climate. Haddock has used the panels to construct an 18,000-square-foot ] showroom and a 32,000-square-foot church, and at trade shows Haddock parks a 3,400-pound pickup truck on a 24-foot-long foam panel ramp which remains straight. | ||
| ==External links== | ==External links== | ||
Revision as of 00:48, 29 September 2005
Structural insulated panels (or structural insulating panels), SIPs, are a composite building material. They consist of a sandwich of two layers of structural board with an insulating layer of foam in between. The board is usually Oriented Strand Board (OSB) and the foam either polystyrene foam or polyurethane foam.
SIPs allow the application of an internal and external structural skin and thermal insulation to a building in one stage, offering efficiency benefits. They are commonly use in conjunction with modern timber framed buildings.
History
Although foam-core panels gained attention in the 1970s, the idea of using stress skinned panels for construction began in the 1930s. Research and testing of the technology was done primarily by Forest Products Laboratory (FPL) in Madison, Wisconsin as part of U.S. Forest Service's attempts to conserve forest resources. In 1937, a small stressed-skin house was constructed and garnered enough attention to bring in First Lady Eleanor Roosevelt to dedicate the house. As a testament to the durability of panel structures it has endured the severe Wisconsin climate and is currently being used by University of Wisconsin as a day care center. With the success of the panels it was reasoned stronger skins could take all of the structural load and eliminate the frame altogether.
In 1947, corrugated paperboard cores were tested with various skin materials of plywood, tempered hardboard and treated paperboard. The building was deconstructed in 1978 and most of the panels retained their original strength with the exception of paperboard which is unsuited to outdoor exposure. Panels consisting of polystyrene core and paper overlaid with plywood skins were used in a building in 1967 and the panels have performed well to the present day.
Then in the early 1980s Haddock, a former construction manager for the Alaska pipeline, began research on a cement skinned panel system called ThermaSAVE to withstand the harsh Alaskan climate. Haddock has used the panels to construct an 18,000-square-foot Ford showroom and a 32,000-square-foot church, and at trade shows Haddock parks a 3,400-pound pickup truck on a 24-foot-long foam panel ramp which remains straight.
External links
- Structural Insulated Panel Association – Industry association for manufacturers of SIPs