Structural insulated panels system (SIPS)
Structural insulated panels consisting of an outer and inner layer of plywood or OSB bonded to a polystyrene insulation core provide both structural rigidity and high insulation levels. As most studs in the wall assembly have been eliminated, SIPs have negligible thermal bridging. The joints between SIP panels should be “tongue and groove” and sealed with caulking to prevent air leakage (Figure 75).
Source : Canada Mortgage and Housing Corporation (CMHC)
Note : SIPs like other form of building components, have quality and strength. SIPs combine several components of conventional building, such as studs and joists, insulation, vapor barrier and air barrier. They can be used for many different applications, such as exterior wall, roof, floor and foundation systems.