In store-front framing, one system for providing thermal insulation is a gasket system. What is the other system?

In store-front framing, the use of thermally insulated extrusion involves creating window and door framing components with specific designs that incorporate insulating materials within the extrusion itself. This approach enhances thermal performance by minimizing heat transfer, ensuring that the frame not only maintains structural integrity but also meets energy efficiency standards.

Thermally insulated extrusions typically have a core made of materials with low thermal conductivity, which is strategically placed within the frame's profile. This construction reduces heat flow through the frame, resulting in a better insulated system that can help improve the overall energy efficiency of buildings and reduce heating and cooling costs.

Understanding the function of thermally insulated extrusion is crucial for glazing contractors, as it directly impacts the comfort levels within spaces and compliance with energy codes. In contrast, other options like thermally insulated tubing, air-filled chambers, and polyurethane foaming may provide some thermal advantages but do not specifically represent the standard practice of utilizing extrusions in store-front framing systems.