Window Thermal Bridge Solutions | Polyamide Break Strips

A window thermal bridge, also known as a cold bridge, is a localized area of significantly higher heat transfer within a window assembly, most commonly occurring through the frame material itself. In traditional non-thermally broken aluminum or steel windows, the metal frame acts as a highly conductive path, creating a direct thermal short-circuit between the cold exterior and the warm interior of a building. This phenomenon leads to several detrimental effects: substantial heat loss in winter and heat gain in summer, increasing energy consumption for heating and cooling; a drastic drop in the interior surface temperature of the frame, often below the dew point, which causes condensation; and the potential for mold growth and occupant discomfort. The thermal performance of a window is quantified by its U-value, and the frame's contribution is a significant part of this overall value. Addressing the window thermal bridge is therefore a critical focus in energy-efficient building design, primarily achieved through the implementation of thermal break technology within the frame profiles to dramatically reduce this unwanted heat flow.