Storm Window Replacement as a Soundproofing Strategy: How Much Noise Can You Really Block? Storm windows are secondary windows installed on the interior or exterior side of existing windows. Their primary function is to provide an extra layer of insulation against temperature changes, but this additional barrier also helps in dampening sound vibrations. When you choose storm windows exterior designs, they add a sealed air gap between the main window and the storm panel. This air gap acts as a sound buffer, reducing the amount of airborne noise that enters your living space. https://www.dostally.com/read-blog/212672