Title: Structural Thermal Break Slab Edge Applications – Schöck North America
Headings: Isokorb® Structural Thermal Breaks.
Insulate concrete-to-concrete slab edges.

Isokorb® Structural Thermal Breaks. Insulate concrete-to-concrete slab edges.
Problems caused by exposed, uninsulated slab edges
Conventional exposed slab edges waste heat, cause mold growth
Airtight vapor barriers solved one problem, caused another
Schöck Isokorb® Structural Thermal Breaks support slab edges, while cutting heat loss by up to 50% and preventing the formation of mold
Insulating exposed slab edges with Schöck Isokorb® offers multiple benefits:
Concrete-to-Concrete Slab Edge Detail Images
Slab Edge Application Examples
Downloads for Slab Edge Applications
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Content: Structural Thermal Break Slab Edge Applications – Schöck North America
Isokorb® Structural Thermal Breaks. Insulate concrete-to-concrete slab edges. Reduce heat loss by up to 50% while preventing mold growth and increasing thermal comfort where slab edges of concrete buildings penetrate the insulated building envelope. Uninsulated slab edges penetrating insulated building envelopes act like heat sinks, creating a thermal bridge between the cold exterior slab edge and the warm interior floor slab, exposing the developer to short- and long-term problems including: read more
Problems caused by exposed, uninsulated slab edges
Cost and environmental impact of wasted energy
Condensation in interior cavities resulting in mold growth, respiratory problems and associated liability
Discomfort due to cold interior surfaces
Noncompliance with new energy code requirements
Conventional exposed slab edges waste heat, cause mold growth
Conventional exposed slab edges create a thermal bridge in the otherwise continuous insulation of the building envelope, rapidly conducting heat away from the interior floor slab, through the envelope and into the exterior environment. For decades, wasted heat was considered unavoidable in North American buildings with exposed slab edges. Because these buildings also leaked air profusely, interior humidity levels equalized with low exterior humidity levels (typically 18 to 25%) during winter months. Forced hot air typically vented at or near cold slab edges further ensured that interior humidity remained too low to reach dew point, form condensation or support mold growth. Condensation forming on interior walls and ceilings adjacent to rooftop penetrations can lead to mold growth, respiratory problems and litigation
Airtight vapor barriers solved one problem, caused another
Modern buildings wrapped in airtight vapor barriers require less heat and retain more moisture from evaporation and human off-gassing, producing interior humidity levels of 35% to 50% (typical) during winter. While this humidity increase benefits energy efficiency and human comfort, it also allows the interior air to reach dew point, form condensation and support mold growth where cold floor slabs penetrate the interior side of the building envelope.