SIPs are a high performance building system suitable for all types of construction. Sometimes referred to as “sandwich panels” or “stress skin panels”, SIPs contain a structural foam (insulating) core bonded between two structural skins. At Enercept, we use expanded polystyrene (EPS) foam for the insulating core and typically use oriented strand board (OSB) for the exterior and interior skins. SIPs are manufactured under factory-controlled conditions and can be fabricated to fit nearly any building design. The result is a cost-effective structure that is energy efficient and 2 1/2-times stronger than stick-built.
When you factor in material cost, labor expense, and job site waste with the benefit of a lifetime of energy savings, the Enercept system is a lower cost building solution.
No. Enercept SIPs were tested at the University of South Dakota and no traces of formaldehyde were detected. The panels do not produce off-gassing of dangerous chemicals either.
There are three methods of heat transfer: convection, conduction, and radiation. R-value is the measure of resistance to heat loss by conduction only. The most import factor in thermal efficiency is the continuity of the insulation. The Enercept SIPs system results in a solid envelope of insulation where even the connection posts have a foam core. Therefore, Enercept SIPs have the ability to resist heat transfer by both conduction and convection (air movement). With this in mind, it is reasonable to assume that a conventional home would require an R-40 wall to compare with a 6-inch Enercept wall (R-24).
A ventilated roof is not necessary in most climates. Model codes allow both vented (cold roof) and non-vented (hot roof) roof assemblies. Because SIPs are insulated, conductive loss of heat is avoided, negating the problems usually associated with a non-vented roof. If you must ventilate your roof, 2x strips can be attached to the top of the roof and then covered with sheathing to form a vented layer over the SIPs.
Enercept was the first SIP manufacturer to patent factory-installed electrical chases. All chases are marked on the interior sheathing of the panels for easy identification. Our roof panels can be pre-wired in the factory to your specifications (when permitted by local building codes). Simply drill access holes through the sill and top plates for access to the electrical chases. A comprehensive Enercept Electrical Guide is available.
Enercept structures are very air-tight compared to other building methods. Generally, a moisture barrier is applied to the exterior of the structure. Seam tape is provided for all interior panel connections and an air exchanger is strongly recommended. These measures will protect your home from moisture, and will create exceptional indoor air quality.
The Enercept building system has been accepted for use by HUD and is ICC/ICBO approved. Enercept SIPs have been third-party tested by independent testing agencies – RADCO and NTA, Inc. Enercept offers a limited lifetime warranty (copies available by request).
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