What are SIPs Structural Insulated Panels? SIPs Defined.

Structural Insulated Panel (SIP) Manufacturer

Manufacturer of Structural Insulated Panels (SIPs)
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Structural Insulated Panels or SIPs as they are commonly referred to by construction and fabrication companies, are high performance building panels. SIPs are commonly employed in walls, floors, and roofs for residential and light commercial buildings.

SIPs consist of three components: the two outer skins, an inner core of insulating material, and the adhesive used to bond the facings to the core. When manufactured under the right factory controlled conditions, SIPs result in a building system that is energy efficient, structurally strong, and cost effective.

Building with SIPs has proven to be far superior to "stick framing" in that SIPs require less labor, time, and money.

The two outer skins of the SIP typically consist of either plywood or oriented strand board (OSB) with OSB being the principal facing used in SIPs since it is available in large dimensions and has had many successful structural tests performed. The later being increasingly important not only for personal safety but also where strict building codes have been implemented.
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1. The Facings

The adhesive in SIPs join the facings and the insulating core together. The most common adhesives resist moisture penetration, prevent panel delamination, and resist the forces of buckling and racking. As with all other ingredients in a SIP, they are code compliant.
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The core of SIPs are made from various materials, including expanded polystyrene (EPS), extruded polystyrene (XPS), and urethane foam. These various insulating cores in the SIPs provide in part the necessary R - value to protect us from the harshest of elements.
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2. The Core

3. Adhesives

It is interesting to note that the two facings of a SIP and the foam core are nonstructural by themselves. However, when the facing, foam core, and proper adhesives are pressure laminated under the right conditions, these materials act synergistically to form a composite product far stronger than the sum of its individual parts.

Not all Building Panels are SIPs. There are many terms that get associated with building panels, such as: foam core panels, stress-skin panels, nail-base panels, sandwich panels, and curtain-wall panels, to name a few. However, many of these panels are nonstructural, and some have no insulation.

To add to the confusion, the term "panelized construction" can include prefabricated stud walls usually associated with the modular industry. Foam Laminates of Vermont uses the terms: foam core panels, SIPs, and stress-skin panels interchangeably, and we mean them to reflect building panels which can withstand high load stress and provide exceptional insulation.

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