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

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