Structural Insulated Panel (SIP) Manufacturer

History of panels
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Manufacturer of Structural Insulated Panels (SIPs)
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Frank Lloyd Wright
Engineers from Forest Products Laboratory weren't the only ones churning out structural panels. In fact, the 1930s saw sandwich-panel technology emerge from another source. Indeed, some of the earliest examples of SIPs can be found in the Usonian houses designed by none other than the famed architect Frank Lloyd Wright.

Frank Lloyd Wright was exceptionally innovative, and his SIPs were a result of his efforts to incorporate beauty and simplicity into cost-effective homes. Wright's attempt at a panel contained no insulation; they consisted of three layers of plywood and two layers of tar paper. Due to the lack of insulation, this prototype failed to achieve widespread popularity and they were never produced on a large scale.

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Forest Products Laboratory
Part 1
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The origin of a structural insulated panel or SIP - according to many sources - can be traced back to 1935. At this time, engineers working at Forest Products Laboratory (FPL) located in Madison, Wisconsin speculated that plywood and other forms of hardboard sheathing could provide the necessary structural support in wall applications. With their concept in mind, the FPL engineers built a panel which consisted of insulation sandwiched between two skins with additional framing members placed within the panel for extra support.

After the creation of their prototype, Forest Products Laboratory entered their custom designed SIP into the marketplace where it sold for next thirty years. During this time, these SIPs underwent an extensive testing period. Indeed, these sandwich-panels were constantly disassembled and reexamined in order to find the best combination of components. FPL engineers also experimented with new designs and materials in order to maximize both strength and efficiency in their SIP.
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