Structural Insulated Panels (SIPs)- a building material that consists of panels
made from a thick layer of foam (polystyrene or polyurethane) sandwiched
between two layers of Oriented Strand Board (OSB).
Structural panels offer very effective insulating qualities, rapid installation,
and consistent quality (minimizing waste). The use of OSB or waferboard for
facings is considered a positive use of wood resources.
In addition, less wood is wasted at the construction site than stick built homes
making structural insulated panels favorable materials to "green building"
What are Structural Insulated Panels?
Wisconsin SIPS Builders