How to Install Soundproof Windows
Single pane windows are the worst for keeping out sounds. If you have single pane windows, you will want to upgrade to double. You need to choose double pane windows carefully, or they may be worthless. To be effective, the assembly needs to be at least one inch thick. The glass should be at least an eighth of an inch thick and spaced far enough apart to keep out sound effectively.
A soundproof window is a second one installed behind the existing, like a storm window. These aren't replacement windows, but are made to work with your existing ones. Another benefit is more protection against all weather, both hot and cold. They insulate and stop the drafts, resulting in energy saving benefits in both summer and winter. When the weather is cool enough, they open and close like any other window.
A professional is the best choice for installing your new windows. The installation process is fast, taking just a couple of hours for each window. Since wood can transmit sound, vinyl is often used for the frames. During installation, any rotted wood will be removed and replaced. A variety of custom colors are available to match the interior of your room. You will have two different looks, the existing window from the outside and the soundproof one wall side.
A layer of transparent plastic is used to laminate the windows and reduce sound waves from penetrating the glass. This plastic stops the vibrations against the glass. An added benefit of the lamination process is protection from ultraviolet light. In addition, they are shatter resistant, for safety and home security.
You will get about an 85% reduction in sound with this method. For more complete sound reduction, a second window can be installed behind the first, giving an added layer of protection.
Do it Yourself Soundproofing Windows
The easiest way to keep out unwanted sounds would be to fill the window space with acoustical foam and drywall the window closed. Unfortunately, this would also block out any sunlight from entering the room. This may work for a home studio, but would definitely not be suitable for the bedroom.
A removable wall plug is a good way to do the job yourself. The plug will block out light, but you can remove it when you want to let in the sun. If light keeps you awake, this may be a benefit. To be effective, the plug needs to fit snug inside the window.
A wooden frame should be made to fit the size of your window space. Soundproofing material such as mats, blankets or floor insulation can be cut to the size of the plug and attached to the frame. Use any material you would normally use on the floors or the wall. Sound proof mats and blankets can be cut to size with scissors. When the plug is finished, use sealing tape to help hold it firmly in place.
