Architecture, SIP’s (Structurally Insulated Panel) Consultancy, U-values and Condensation Risk Analysis

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About SIP’s

What are SIP’s

SIP's (Structurally Insulated Panel) are a highly sustainable sandwich construction comprising two layers of sheet material bonded to a foam insulation core. They have hardly any internal studs within the panels and rely on the bond between the foam and the two layers of sheet material to form a load-bearing unit (though there may be studs at corners and around some openings). SIP panels are used in the same way as timber- or steel-framed panels. One advantage of SIP panels is that the insulation layer is more continuous than in normal framed panels. This leads to better thermal performance for a given thickness of panel because of the absence of thermal bridges associated with studs.

The two layers of sheet material can be of a variety of materials; oriented strand board and cement-based boards are fairly common. The rigid foam core will usually be expanded polystyrene, polyurethane or polyisocyanurate.

Advantages of SIP's

  • Highly sustainable construction method
  • Faster completion times compared to many other construction methods
  • Superior thermal performance compared to other methods on like for like thickness
  • Exterior cladding and first fix internal works can be installed at the same time
  • Superior air tightness without out the need for air barriers
  • Very low on site waste