What is the best material to soundproof a window?
On One Hand: New WindowsSoundproof double- and triple-paned glass windows are most effective at noise reduction because of the added barriers.On the Other: Alternative Soundproofing MaterialsAlternatives to window replacement include soundproof curtains, thick soundproof foam and noise-reducing window plugs made from wood and foam.Bottom LineWindows can be replaced with noise-reducing windows or with an additional barriers.