IMPROVING SOUND REDUCTION WITH VELFAC WINDOWS
VELFAC high performance windows offer excellent insulation which not only reduces heating bills, but also provides impressive acoustic control. Sound dampening performance in windows is shown by an Rw rating which indicates the number of decibels by which a window can reduce apparent noise. A standard VELFAC double glazed unit achieves Rw32, which can be increased to Rw41 by adjusting the thickness of the glass and the glazing rebate.
While VELFAC standard double glazing is very effective at reducing external noise, the use of thicker glass or different combinations of glass can significantly improve performance and can deliver more precise acoustic control.