Composite Panel Building Systems (CPBS, Corpus Christi, Texas, USA) has launched a fully composite structural insulated panel (C-SIP) designed to deliver superior performance by continuously insulating and sealing the building envelope. According to a CPBS spokesperson, "The C-SIP is unequaled in building science development and engineered with six functions integrated into one building product: exterior sheathing, superior insulation, air barrier, vapor retarder, moisture barrier and structural walls."
The C-SIP wall panels consist of fiberglass reinforced thermoset polymer (FRT) skins bonded to rigid polyurethane foam by a chemical reaction during manufacturing, which reportedly eliminates any risk of delamination. The C-SIP 4-inch/102mm thick foam core are touted as having an R-value of 26, and will not settle, shrink or lose insulating value over time, providing significant energy savings.
Serving as an air and moisture barrier, the energy efficient C-SIP is designed to replace multiple building products with a single, precision engineered product enabling LEED and NAHB Green Building points. Many house wraps, water resistive barriers and laminated or fibrous SIPs suffer damage during installation and fail to prevent water intrusion before finish materials are applied. C-SIP wall panels are engineered to withstand the rigors of the construction process without losing performance value, saving time and labor costs by reducing rework.
CPBS has teamed with several major materials manufacturing companies including 3M (Minneapolis, Minn.) and Bedford Materials (Manns Choice, Pa.) to integrate a complete system of accessory products that drive additional energy, moisture and vapor performance characteristics for the C-SIP System. Eco-friendly composite FRT channels from Bedford are used to join the C-SIP wall panels together, attach to the foundation, floor system, and roof structure as well as pultruded composite frame windows. The FRT channels eliminate the use of wood or metal connection materials - the greatest contributors to thermal bridging - which are susceptible to rot, mold and moisture penetration, as well as termite or insect infestation that can dramatically weaken the structure.
- Cost effective installation of the C-SIP system achieves 2012 energy code requirements today while ensuring rapid assembly, reducing job site waste and increasing building envelope performance.
- The tight building envelope created by using CPBS products with the required joint sealing system delivers a substantial reduction in the required HVAC cooling load – as much as a 40 to 50 percent decrease over required cooling capacity for a building using conventional building materials.
- Using C-SIP wall panels reduces the cost of HVAC equipment and cuts the operating costs for the lifetime of the building, delivering an attractive net-zero investment and a long term return on investment.
- The dramatic reduction in energy use allows smaller and more affordable alternative energy systems to yield a higher cost-benefit value and puts a building project within reach for achieving true 'Net Zero' performance.
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