Posts Tagged ‘ STC ’

Is Sound Control the Next Big Thing?

Apr 26th, 2016

I recently noted with a great deal of interest that the National Fenestration Rating Council (NFRC) approved a new proposal for an optional ventilation rating procedure for operable fenestration products. As fenestration U-values have been pushed lower and lower in recent years, the NFRC is thinking about other important factors and test methods that may provide […]