Frequently Asked Questions
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The vertical joint created at panel ends is merely 1/8" and is back sealed with non-curing butyl sealant. MetalWrap Series has been modeled to ensure that the exterior support stud flange remains above the dew point temperature in all climate conditions.
In special circumstances where the interior of the building has unusually high temperature or relative humidity, such as hospital recovery rooms or natatoriums, our engineering and design team recommends that the joint is face-sealed.
MetalWrap Series provides a continuous air and moisture barrier. Our panel protects the interior of the building through engagement of pressure equalized panel joinery, along with a field and factory applied network of butyl sealant.
Other variations of insulated metal panels are fully capable of providing the primary building envelope. MetalWrap Series has the benefit of being shielded by the exterior masonry, metal or terra cotta. This double line of defense creates the best possible wall system available.
The face sheet of the MetalWrap Series 200 panel is mortar resistant because it has been continuously coil-coated with an epoxy primer.
Because brick and similar claddings are permeable, some water will penetrate these exteriors. Fortunately, MetalWrap Series provides a coated steel drain plane that is not permeable. Water will flow down the face panel and be directed to the exterior of the building. A 1 or 2" cavity between the exterior masonry, terra cotta or metal and the MetalWrap Series face panel results in a back-up system that will drain, vent and dry. With this design, MetalWrap Series will last for the life of the building.
The foam is 90 percent close celled and does not retain moisture. Because MetalWrap Series is enclosed one or two inches inside the exterior masonry, terra cotta or metal veneer and has a well-designed drain plane, neither moisture nor sunlight is an issue.
Factory and field applied seals are created using a high grade non-curing butyl sealant. MetalWrap Series sealants will last for the entire life of the building.
The insulating core is a polyisocyanurate or PIR material. Our all-in-one panel design results in an R-value of 14 for the 2" panel and an R-value of 21 for the 3" panel and an R-value of 27 for the 4" panel.
The MetalWrap Series panel is identical to CENTRIA architectural panels that have been tested and qualified through the FM 4880 and 4881 test protocols. Full test reports are available.
The panel has been tested to meet the requirements of Chapter 26 of the International Building Code. Hourly ratings, if required, can be achieved with the addition of gypsum layers attached to a stud system or directly to the MetalWrap Series panel.
MetalWrap Series shall warrant, for a period of two years, that panels, trim and accessories will be free of defects in factory workmanship.
The intermediate anchor is fastened through the MetalWrap Series 200 panel face into the stud behind the panel. This anchor is set on a 60 mil sheet rubberized sealant pad to seal the fastener hole.
Multi-purpose clips are installed in the pressure equalized joinery and serve as mounting surfaces which can receive rail systems, clips and other accessories. This system with connections in joinery has been tested for air and water infiltration.
MetalWrap Series has been fire tested per the requirements of Chapter 26 of the IBC. Air and water infiltration testing has occurred in accordance with ASTM E 283-04 and ASTM E 331-0. Structural load capacity and thermal efficiency testing has been completed. Full test reports are available.
CENTRIA Design and Development can assist in developing methods of attachment that will allow MetalWrap Series to accept seismic movement.
Insulation in the stud cavity behind MetalWrap Series will lower the temperature of the MetalWrap Series liner element. Since this liner is the established air and vapor barrier for the wall this may be a condensation problem if the liner temperature dips below the dew point for the given interior RH and interior temp.
CENTRIA design and development can help determine, via dew point analysis,
allowable levels of supplemental insulation.
The R-value of 21 for a 3"-thick panel is a thermal value of a total wall system including a vertical and horizontal joint. The test specimen description in the National Certified Testing Laboratory Report is as follows, "the test specimen was an insulated wall section measuring 68" wide by 84" high overall. The specimen consisted of two interlocking panels which were joined creating a vertical joint."