: Frames and sashes are fusion-welded to prevent gaps or splits that could lead to air leakage. Choosing the Right Rating for Your Climate
: Their windows feature five insulating chambers that prevent thermal bridging—a process where heat flows through poor insulators. Eurocraft Windows U Rating
: Use of Kommerling uPVC extruded profiles, which are designed for high insulation and durability against streaking or chalking. : Frames and sashes are fusion-welded to prevent
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 . A U-rating measures the rate of non-solar heat
The (or U-rating) for Eurocraft windows typically indicates high energy efficiency due to their multi-chambered uPVC construction and insulated glass. While specific U-ratings vary by model and glass configuration, high-performance windows generally aim for a U-factor of 0.30 or lower . Quick Guide to Window U-Ratings