Editing Structural insulated panel (section)

{{Short description|Form of sandwich panel used as a building material}}
{{Use dmy dates|date=April 2025}}
{{more citations needed|date=May 2018}}
[[File:Isokern SIPS 2.0.jpg|thumb|SIPs are most commonly made of OSB panels sandwiched around a foam core made of polystyrene.]]
A '''structural insulated panel''', or '''structural insulating panel''', ('''SIP'''), is a form of [[sandwich panel]] used as a [[building material]] in the [[construction]] industry.

SIP is a [[sandwich structured composite]], consisting of an insulating layer of rigid core sandwiched between two layers of structural board. The board can be [[sheet metal]], [[fibre cement]], [[Magnesium oxide wallboard|magnesium oxide board]] (MgO), [[plywood]] or [[oriented strand board]] (OSB), and the core can either be expanded [[polystyrene|polystyrene foam]] (EPS), [[extruded polystyrene]] foam (XPS), [[polyisocyanurate]] foam, [[Polyurethane uses|polyurethane foam]], or be [[composite honeycomb]] (HSC).

<!--  SIPs share the same structural properties as an [[I-beam]] or I-column. The rigid [[insulation material|insulation core]] of the SIP acts as a web, while the sheathing fulfills the function of the flanges.   <<  Is this a useful comparison?  -->The sheathing accepts all [[tensile force]]s while the core material has to withstand only some [[Compressive force|compressive]] as well as [[shear force]]s.

In a SIP several components of conventional building, such as studs and joists, insulation, vapor barrier and air barrier can be combined. The panel can be used for many different applications, such as exterior wall, roof, floor and foundation systems.