Windows: For windows, lower U-values indicate better insulation. Double-glazed windows typically have U-values between 1.1 and 1.6 W/mK, while highly efficient triple-glazed windows can achieve U-values of 0.8 W/mK or lower.
Windows: For windows, lower U-values indicate better insulation. Double-glazed windows typically have U-values between 1.1 and 1.6 W/mK, while highly efficient triple-glazed windows can achieve U-values of 0.8 W/mK or lower.