Euro vs U.S. Window Rating Procedures
< 1 min read Understanding window U-value is critical to achieving a high-performance building and avoiding condensation indoors, but did you know that all window rating procedures aren’t equal? In the U.S., façade experts use NFRC-100 to calculate window assembly U-values, while in Europe, the industry relies on ISO 10077-2. However, these two rating procedures can determine two U-values…
