There are no studs or braces to cause breaks in the insulative action. SIPs (if made with structural “skins” such as OSB) are structural elements. A wall with fiberglass insulation rated at R-13 can have an actual result of R-8 or less due to these other factors.Ī study by the Oak Ridge National Labs (ORNL) in Tennessee proves that a 4" SIP wall outperforms traditional 2" x 4" stick and batt construction, and even edges out 2" x 6" construction in terms of thermal performance. Poor installation of fiberglass batt insulation can also reduce the R-effect significantly. In addition, other construction materials and components, such as bracing, nails or screws, wiring and switch boxes, and any number of things that are not insulation, and, in all likelihood, have low R-values, negatively affect the overall quality of an insulated wall, floor, or ceiling. In reality, this reasoning doesn't take into account all the other components that go into making a wall: wood or steel studs every 16 or 24 inches reduce the overall R-value, and allow airflow within the wall space. Insulations that allow airflow cannot compare to ICS SIPs. However, R-value is only a measure of conduction, and does not measure the other five mechanisms of heat transfer. Thus, a product with a value of R-28 is much better than a product with a value of R-13. The higher the number, the greater the resistance to conduction of heat. When someone says "R-value", what they are talking about is resistance to conductive heat flow in a given medium, such as fiberglass insulation. They outperform other building methods in virtually every aspect because of the structural strength, ease of erection, and insulation value of the components. Standard drywall can also be used as a “skin,” but does not qualify as a structural support element. The outer surfaces (also called “skins”) can be oriented strand board (OSB), fiber-cement (FC), galvanized stainless steel (GSS), fiber-reinforced plastic (FRP), various sidings, or other structural materials. A 6-1/2" (16.51 centimeters) thick panel has an R-value of R-42 or higher (compared to the claim of R-19 for fiberglass insulation). A typical lCS 4-1/2 inch (11.43 centimeters) thick panel has an R-value of R-28 or higher (compared to the claim of R-13 for fiberglass insulation). These panels are joined together via a patented panel connection system featuring embedded steel cam-locks and a double tongue-and-groove interface, ensuring a sealed, tight fit. As part of each panel, structural elements add tremendous strength. ICS panels are manufactured by injecting polyurethane foam between two surfaces. ICS SIPs are designed to carry the entire range of structural loads in a building. While most commonly used for exterior walls, SIPs can also serve as a load-bearing floor and ceiling/roof. SIPs designed and manufactured by Insulated Component Structures (ICS) provide the best thermal/structural envelope available today. When installed, a SIP provides both structure (support strength) and insulation (resistance to the transfer of heat, cold, sound, vibration, etc.). SIPs stands for Structural Insulated Panels.
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