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Author Topic: Soundproofing large windows against 70dB?  (Read 807 times)

MicahZoltu

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Soundproofing large windows against 70dB?
« on: December 14, 2018, 12:10:34 PM »

As many people here, I have a noisy neighbor problem.  In this case, they are of the night-club/karaoke variety to the tune of 70dB - 80dB as measured outside my window.  Unfortunately, the country I live in does not have noise regulations that will help me, so I need a "help myself" solution.  The biggest problem is the base/drums, the current windows block out everything else well enough so I need something to help with the low frequency noises.

A couple problems I have run into while researching:

1. My windows are quite large, ~2.5m x 1.6m (~8' x 5').
2. I do need to be able to _open_ the windows from time to time to air out the unit.  I don't need to be able to see out the windows while they are closed though, and in fact I currently have black-out blinds installed that are closed 98% of the time to block out light.

I'm curious if anyone has any suggestions for a solution that can deal with that level of noise?  It seems like most people are trying to block out street traffic noise and whatnot, rather than an open-air night club within line-of-sight of the room.  The building is a high-rise with nice thick concrete walls, and I'm reasonably confident that the problem is solely the windows, and not the walls.  Also, due to my location whatever solution I come up with will likely need to be implemented by me (with the help of a contractor potentially) since I have been unable to find professional sound proofing services in the area.  I don't mind putting in the effort, but any solution that requires custom parts built in a factory designed for this type of thing is probably non-starter.

Randy S

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Re: Soundproofing large windows against 70dB?
« Reply #1 on: December 14, 2018, 04:59:00 PM »

install a second window with the greatest air gap you can acquire, since your walls are concrete you should be able to achieve 2-3" of air space between the existing window and a new window.

Randy S.
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MicahZoltu

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Re: Soundproofing large windows against 70dB?
« Reply #2 on: December 15, 2018, 04:24:12 AM »

The way the current windows are installed, I can probably get ~3" of space between the current window and the second window.  Do you think that will that be enough to give me the necessary sound reduction, particularly of low-frequency noise?  I could probably get another 1" if I un-mount the windows and push them out a bit (at the moment there is a lip outside the window as well as inside due to mounting the windows in the middle-ish of the frame).  If I could get 4", do you think that will be effective at stopping low-frequency noise?

Randy S

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Re: Soundproofing large windows against 70dB?
« Reply #3 on: December 17, 2018, 04:06:24 PM »

Yes it would especially for lower frequencies.
The only thing that would alter my statement would be cost vs reduction.
The gains for another inch would be estimated at 6 STC additional points so as long as the cost of moving the existing window out further was not double the cost go for it.

Randy S.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040