Thermal break refers to a construction technique or feature used in buildings to prevent or minimize the conduction of heat between two adjacent surfaces or components with different thermal properties. It is primarily employed to enhance the energy efficiency and reduce heat loss or gain in a structure, especially in areas where temperature differentials exist.
A thermal break typically consists of an insulating material or a separation element strategically placed between two adjacent materials with different thermal conductivities, such as metals or building materials. This insulating layer interrupts the direct transfer of heat, creating a barrier that restricts thermal energy transmission. By doing so, it mitigates thermal bridging, which is the flow of heat around or through a highly conductive material, preserving indoor thermal comfort while lowering energy consumption.
Thermal breaks are commonly utilized in fenestration systems, such as windows, doors, or curtain walls, where metal frameworks could otherwise create major avenues for heat transfer. The insulating material used in thermal breaks is typically a low conductive substance, like polyamide, polyurethane, or timber. In addition to their thermal properties, these materials are also selected for their durability, structural integrity, and resistance to moisture or corrosion.
Overall, the implementation of thermal breaks in building design plays a vital role in improving energy efficiency, minimizing heat loss, optimizing thermal comfort, and reducing reliance on mechanical heating or cooling systems.
