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Schöck Isokorb for Controlling Thermal Bridging

by LiveModern Webmaster last modified Jan 04, 2012 02:08 AM
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by Alex Wilson last modified Jul 15, 2010

Isokorb K uses EPS to reduce the thermal bridging at cantilevered concrete slabs. Photo: Schöck Bauteile, GmbH. Click on image to enlarge. A German system for reducing thermal bridging in commercial construction looks like a real winner. In comme... This schematic shows how stainless steel re-bar extending through the EPS insulation carries structural loads. Photo: Schöck. Click on image to enlarge. Special steel is used in Isokorb. Stainless steel 316TI is used both for its corrosion resistance and because it allows just a quarter as much heat flow as standard steel re-bar, according to Alexander Krenczik, the area manager at Schöck. Range of products available Isokorb K is available for slab thicknesses ranging from 160 mm (6.3 in) to 250 mm (9.8 in) in 10 mm (0.4 in) increments. A new product, Isokorb XT, is the only thermal break element that is certified by the German Passivhaus Institut . In Passive House construction, thermal bridging and condensation are high priorities. This particular version is available for slab thicknesses of 160, 180, 200, 220, and 250 mm (6.3, 7.1, 7.9, 8.7, and 9.8 in, respectively). Thermal bridging through an unbroken slab (left) allows cold temperatures (yellow) to reach the living space, while a thermally broken slab keeps the interior much warmer (red and orange). Images: Schöck. Click on image to enlarge. Different versions of Isokorb are available for other thermal break applications: Isokorb KS is used for concrete-to-steel connections; KSH is used for concrete-to-wood connections; and KST is used for steel-to-steel construction. Though I'm not a structural engineer, all of these products appear to be fully engineered to standards one would expect from a German manufacturer. As architects get more sophisticated in delivering highly energy-efficient commercial and high-rise residential buildings and as greater attention is paid to ensuring indoor air quality, I believe that Schöck Isokorb will play an important role. The company has been a leader in building component manufacturing to control thermal bridging for 30 years and it has over 400 employees. Illustration showing the use of Isokorb in a cantilevered balcony concrete slab. Graphic: Schöck. Click on image to enlarge. The Schöck Isokorb products are currently available in North America through Schoeck Canada , a subsidiary of Schöck Bauteile, GmbH . A Chicago office will be opened later this year. Full technical literature (in English, but with metric dimensions and properties) is available for downloading from the Canadian website. In 2009, five U.S. projects were completed with Isokorb, but Krenczik thinks that the product will achieve significant market penetration in the U.S. within five years. New educational materials from the company address the LEED Rating System and how the company's products can earn points. For more information: Schoeck Canada, Inc. Kitchener, Ontario 519-896-2100 Alex Wilson is the executive editor of Environmental Building News and founder of BuildingGreen, LLC . His product-of-the week column comes out weekly, as does his Energy Solutions column. To keep up with his latest articles and musings, you can sign up for his Twitter feeds . See more on this product in the GreenSpec Guide






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