We live on a street that gets busy around 7:30AMThe street facing room will be turned into a nursery soon and we want to reduce the amount of street noiseThe walls and attic are insulated with fiberglass insulation and gutting it to spray Iceyene is not an optionI was told that most sound comes in through the windows (we have new double pane windows).so I am looking to see what the best material for window treatments is that will reduce street sound the most.Also, anything else I can do to reduce street sound?
If you want to keep the window then secondary glazing can help1) if the window isn't required as a fire escape then you buy a sheet of glass which is thicker than the existing one - 6mm laminated glass is a good option (acoustic laminated is available but pricey)Make a new rebate using, say, 20mm x 20mm wood nailed to the existing rebateThis should be AT LEAST 100mm from the outer glass (200mm would be the most effective)Put an adhesive sponge strip (from a glass merchants) on the rebate first to cushion the glass and form a total sealThen put a second bead to hold the glass in placeMake sure there are absolutely no gaps around the glass and put a sachet of silica gel between the glass to absorb any moisture, 2) If the window is needed as a fire escape then you can purchase sliding, secondary glazing sytems or a simpler plastic frame whic goes round the perimiter of the glass and then is screwed to the window surround, The main thing is to use as thick a glass as possible, make sure there are no cracks or gaps and the glass should be 100 -200 mm from the exisingHope this helps
what is your initial condition ? Note: 1/10 of their initial maximum amplitude
