Structural Insulated Panels

A highly efficient alternative to conventional framing, SIPs are gaining more traction with builders.

By now familiar to most builders, SIPs are made from expanded polystyrene (EPS) or polyisocyanurate rigid foam insulation sandwiched between two structural sheets of oriented strand board. About 12,000 homes were built with SIPs in 2002, according to the Gig Harbor, Wash.-based Structural Insulated Panel Association.Considering how many houses are erected annually, this number is barely a blip on the national radar. The technology, however, is gaining acceptance. Even the nation’s largest home builder, Pulte, is testing the viability of producing large quantities of SIPs houses.

(Via EcoHome: Most Read Product Reviews.)