New spring-loaded screw drive in to sound absorption panels Drywall

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Image: Malmö University – “Sound Screws” may be an easy way one day to tune bruised neighbours.

Although the smooth walls are easy to paint around your home and great for hanging art, they are also very effective in transmitting sound waves from room to room, which is less sought after. Adding insulation to sound is one way, although the use of clever, sound damping screws is a cheaper and easier way to install dry walls.

Special deeper-threaded screws are used to attach drywall sheets at the wood-framed walls or ceiling of the room to ensure panels are never loose. While the walls of your home may feel strong, the drywall is actually rather fluid and can vibrate as a drumhead when sound waves hit it. You have experienced the downside of the material that has largely replaced plaster walls decades ago, if you have ever lived in an apartment without trouble hearing the arguments of your vicinity.

There are many ways to avoid the escape of sounds. Isolated walls will help absorb sound waves, and garages generally use thicker drywall sheets that absorb sounds more efficiently. In sound absorbers, you can even cover the walls in angled characteristics that dispel the energy of a sound wave — a solution often used in studios — but it can be costly and stupid. A more streamlined solution without customized installing tools is the Sound Screw, which was developed by Håkan Wernersson, Department of Material and Applied Mathematics at Malmö University, Sweden.

Image: Akoustos AB

The Sound Screw has a flexible spring just below the head while a traditional drywall screws contain a panel of drywall snug in order to fight the wooden stubs forming the structure of a room. The drywall remained secure onto a wall, but the spring expanded and compressed with a very slight gap, dimmed the power of soundwaves that hit the walls and made them much quieter as they reverberated into another room. During a sound test, researchers say that the use of the Sound Screws reduces acoustic transmission by up to nine decibels, making sounds bounce about half as loud to human ears in a neighboring area.

The creator of the Sound Screw is always looking for manufacturers for mass production. And while its design means that it is more complex to make and in turn costly than standard drywall screws to buy, it should be a cheapest solution in the long term, especially in terms of the ease with which to install them. You have all the expertise you need if you can use a drill or a screwdriver.