It's because double pane windows already have 2 layers of fabric and an air gap, Therefore the insert isn’t contributing as much. One-glazed window, on the other hand, can massively reap the benefits of an additional layer and an air gap. Laminated glass is two or even more lites of https://acousticlaminatedglassser26784.mybuzzblog.com/10401013/what-does-acoustic-laminated-glass-services-mean