When looking for replacement windows to block sound, it is important to keep in mind that windows do not all block sound equally. Just because a window is new does not necessarily mean that it will reduce outside noise as much as you would like it to. Here are some things that keep in mind when looking for replacement windows to block sounds from outside.
Multiple panes are not necessarily enough.
Many homeowners are surprised to find that their new double pane windows may not reduce noise significantly more than their old single pane windows. Different thicknesses of glass block different frequencies of sound, so if the two panes (or even three, for triple pane windows) are the same thickness, the number of panes will not really make a difference. To block more frequencies of sound, the panes should be different thicknesses.
Panes should be spaced apart.
With all other factors the same, the more space between layers of glass in a window, the more effective that window will be at blocking sound. The amount of spacing between the panes will also affect energy efficiency, so make sure to discuss this option with a local window replacement specialist to figure out how much space you really need between window panes.
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