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Spring-Loaded Screw Turns Drywall Into Sound-Absorbing Panels

This looks promising for a 9db reduction in sound escape in homes.

Apparently the spring loaded screw acts as a dampener of sound vibrations that hit a regular dry-wall.In principle, the screw is split in the middle with a spring placed inside. The screw tip goes into the wooden joist, the head holds the plasterboard in place and in between a thin resilient mechanical coupling that prevents the sound waves from advancing is formed.

They have patents and are looking for mass production.https://www.akoustos.se/

I’d certainly consider it for renovations and new builds.
blooloo

Showing 2 responses by baylinor

baylinor's avatar
baylinor
1,213 posts
 
Double 5/8" sheetrock with green glue sandwiched in the middle. Proven technology. Install it on offset studs or resilient channels with sound isolation clips and that's a good start.
baylinor's avatar
baylinor
1,213 posts
 
@emailists 
You are correct, the install was probably not done properly. In my slightly over 2700 cubic feet listening room, we used 71 large cartridges of green glue and 21 of sealant. For those who think quietrock is expensive, think again. Conventional double sheetrock/green glue construction verses quiet rock will end up costing you twice as much. But you get what you pay for. On top of that quietrock does not work well in ceiling applications.  In my house of stereo, I can play NIN hesitation marks at 90 dbs and there is zero vibration outside the room. If you love bass and want to keep it inside, there is no compromise. You can see some of the construction process laid out in my house of stereo system. 
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