Eurocraft Windows U Rating May 2026

: Their windows feature five insulating chambers that prevent thermal bridging—a process where heat flows through poor insulators.

: Lower is better. A lower number means the window is a better insulator and keeps more heat inside during winter and outside during summer. Eurocraft Energy Efficiency Features Eurocraft Windows U Rating

: Use of Kommerling uPVC extruded profiles, which are designed for high insulation and durability against streaking or chalking. : Their windows feature five insulating chambers that

: Frames and sashes are fusion-welded to prevent gaps or splits that could lead to air leakage. Choosing the Right Rating for Your Climate including the glass

A U-rating measures the rate of non-solar heat transfer through a window assembly, including the glass, frame, and spacers. : Ratings typically range from 0.20 to 1.20 .