EPiC database - Structural insulated panel (SIP)

This material is part of the free Environmental Performance in Construction (EPiC) Database. The EPiC Database contains embodied environmental flow coefficients for 250+ construction materials using a comprehensive hybrid life cycle inventory approach.

Structural insulated panels, often referred to as SIPs, are a composite product containing an outer skin and inner core. As their name suggest, they are typically used as a structural element for low-rise buildings.

Outer layers of oriented strand board (OSB) are glued to an insulating core made from expanded polystyrene (EPS). The core gives the panels good thermal properties while the outer skins provide a durable, aesthetic finish. Alternative core materials, such as extruded polystyrene (XPS) or rigid polyurethane (PU) foam and outer skin materials, such as plywood or fibre cement sheet can also be used.

SIPs can be used as wall or roof panels and are mainly used in domestic construction. They are very lightweight and thus easy to move. The panels come in a range of thicknesses ranging from 100 to 300 mm. Typical panel dimensions are 300, 600, 900 and 1 200 mm wide and 2.4, 2.7 and 3 m long. Openings for windows and doors are cut out of panels during manufacture. Panels are connected onsite using splines with cavities cut into the core for electrical and plumbing services.


Embodied energy Embodied carbon Embodied greenhouse gas emissions Embodied water Input-output analysis Construction Building Materials Environmental performance Life cycle assessment LCA Database Process analysis Australia Hybrid analysis Life cycle inventory LCI Concrete block Cement mortar Portland cement Autoclaved aerated concrete (AAC) Concrete 20 MPa Concrete 25 MPa Concrete 32 MPa Concrete 40 MPa Concrete 50 MPa Fibre cement sheet Fibre cement weatherboard Gypsum plaster Plasterboard - 10 mm Concrete roof tile Flat glass Double glazing - flat glass Laminated glass Toughened glass Double glazing - toughened glass Cellulose insulation Aluminium foil insulation Glasswool insulation Rockwool insulation Polystyrene (EPS/XPS) insulation Polyurethane (PU) rigid foam insulation Aluminium bar Aluminium composite panel Aluminium extruded Aluminium sheet Copper sheet Copper pipe Copper wire Cold rolled stainless steel Stainless steel extruded Stainless steel sheet Stainless steel wire Cold rolled steel Hot rolled galvanised structural steel Hot rolled structural steel Steel bar Steel hollow section extruded Steel pipe Steel sheet corrugated Asphalt Nylon carpet Wool carpet Silicone Water Wood glue (PVA) Solar hot water system Solvent-based paint Water-based paint Wallpaper Natural rubber Synthetic rubber High-density polyethylene (HDPE) film High-density polyethylene (HDPE) pipe Low-density polyethylene (LDPE) film Low-density polyethylene (LDPE) pipe Nylon 66 Acrylonitrile butadiene styrene (ABS) Ethylene tetrafluoroethylene (ETFE) Glass reinforced plastic (GRP) Linoleum Polycarbonate Polymethyl methacrylate (PMMA) Polypropylene (PP) sheet Polyurethane (PU) flexible foam Polyvinyl chloride (PVC) film Unplasticised polyvinyl chloride (uPVC) Clay brick Gravel Recycled aggregate Sand Sanitary ceramic Dimension stone Ceramic tile Clay roof tile Cork slab Hardwood Cross laminated timber (CLT) Glued laminated timber (glulam) Laminated veneer lumber (LVL) MDF sheet OSB sheet Particleboard Plywood Structural insulated panel (SIP)


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