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Knight Wall Continuous Insulation Rainscreen

by LiveModern Webmaster last modified Jan 04, 2012 02:14 AM
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by Brent Ehrlich last modified Dec 31, 2010

Knight Wall System's GI-Girt rainscreen supports a variety of cladding option and provides continuous insulation across the exterior of steel framed buildings. Photo: Knight Wall Systems. Happy New Year! I am going to keep the following blog fai... Knight Wall Systems introduced its standard rainscreen system in June of 2010. This  "drop-in" system incorporates all the framing components and cladding, which simplifies specifying and installing the product, according to the company. The brackets that hold the frame are available in two-, four-, and six-inch sizes to accommodate different thicknesses of exterior insulation, and if the wall is out of plumb--as in retrofit applications--it can be easily adjusted (without shims) using its Stoffix "self-leveling" mounting system. The Stoffix system has minimal thermal bridging where the bracket attaches to the wall but it is not a continuous insulation barrier. But Knight Wall's CI-Girt (CI, continuous insulation) rainscreen system is mounted on top of the rigid foam board insulation (again, two-, four, and six-inch attachment options are available). The Gi-Girt is attached by screwing it in through the insulation. There are no brackets, and virtually no thermal bridging. The CI-Girt system does not have the leveling feature of the Stoffix system, but it does have superior R-values. Note: mineral wool can be specified with the standard Knight Wall Stoffix system but is not dense enough to support the CI-Girt system. The company claims that by eliminating the thermal bridging, the CI-Girt system can provide an effective R-value of 16.5 on an R-15-insulated exterior wall; whereas a standard wall assembly using the same insulation would only have an effective R-value of 8.5 because of thermal bridging through the penetrations. According to Harley Simonson, one of the founders of Knight Wall Systems, "The CI is the most energy-efficient system on the market today." The company is currently creating an eight-inch support frame for one customer to accommodate even more insulation and Simonson said, "We are in the process of designing an R-60 wall, which is unheard of in the marketplace." Cladding options for the Knight Wall System include Stonel thin brick panels, StoneSheets (thin sheets of stone fused to a honeycomb aluminum frame), stucco, tile, metal, and cement and composite panels. The company also offers Boston Valley Terra Cotta . Simonson said different claddings can be installed on the same mounting system so a building can have the look of stucco, metal, and stone on the same frame. The Knight Wall CI-Girt looks like a versatile rainscreen system. I'll track down additional performance data, talk with those using the system, and provide more details for next month's EBN. Hope you all have a peaceful, prosperous, and safe New Year! Knight Wall Systems 509-262-0104 See more on this product in the GreenSpec Guide Brent Ehrlich is the products editor at BuildingGreen  






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