Thermal Break Frames

Energy Efficiency & Reduced Energy Costs

The thermal conductivity of metal frames allows for hot or cold temperatures from the exterior of a building to transfer to the interior. Many design professionals are turning to thermal break frames, or “thermally broken brakes”, to meet regional codes or the energy efficiency requirements of building owners.

Thermal break frames have a separator material that is highly resistant to thermal conductivity. This significantly lowers the U-value and reduces energy costs in areas with hot or cold weather. Manufacturers generally test to SDI-113 for the thermal transmittance of steel door and frame assemblies.


SDI has developed a variety of resources for architects, specifiers and distributors on thermal break frames below.


The Growing Demand for Thermal Break Frames

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Why Have Thermal Performance Ratings Changed?

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SDI 113

Standard Practice for Determining the Steady-State Thermal Transmittance of Steel Door and Frame Assemblies

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The SDI Certified manufacturers below make thermal break frames, transoms, sidelights, and borrowed lights that meet our standards.