Posts Tagged ‘ Sound Transmission Classification (STC) value ’

The Sound of Silence

Sep 21st, 2023

With Energy Star 7.0 looming on the horizon, thermal performance ratings have window manufacturers and dealers wondering just how low U-values can go and how much lower makes a practical difference. As fenestration U–values have been pushed lower and lower in recent years, the National Fenestration Rating Council (NFRC) should be thinking about other important […]