For interior windows, there's none better than the Tru Acoustics™ Soundproof Window. It's built to perform in rooms with the highest sound standards, making it the perfect fit for recording studios,
gun ranges, theater watch rooms, and more!
If you're looking for an exterior window, there's a HUGE range of performance from single pane windows up to hurricane glass windows. What you want to look for is the STC Rating
of the window to determine how good it is at blocking sound. Most residential windows are rated between about a STC 26 and STC 36. An STC 26 window will block 50% of the noise of an STC 36 window.
Factors that affect the STC rating include thicker glass, multiple panes with a large air gap, and being well-sealed when closed.
Laminated glass is an upgrade over tempered glass at the same thickness (about 20% quieter). Damping of laminated glass is reduced by cold weather, so in double glass construction,
the laminated pane should be on the interior side of the window to maximize performance. With multiple panes, the bigger the air space the better (+2-3 STC points for every doubling of the air gap).
Start with the basics and make sure your window frame is properly sealed with acoustical sealant. After that, you can upgrade any window significantly with the use of a
Fantastic Frame™ Soundproof Window Insert, reducing sound through your window by up to 80%.