Author Topic: Soundproofing The Common Wall  (Read 3939 times)

JOSEPHLB

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Soundproofing The Common Wall
« on: May 20, 2009, 05:37:31 PM »
Due to my obnoxious, "thuggish" neighbor, I may have to resort to doing some modifications on the common wall side of our townhome.  The wife is really to the point of losing it, and we are considering moving.

Unfortunately, the township I live in has no "noise ordinance" or "nuisance ordinance".  Even though we've called and complained to the township authorities; they even stated they could fine him for "disorderly conduct", they fail to do nothing.  Last thing they told us, they "have washed their hands" with the back and forth complaing and can't really do anything. 

The common wall that I need to do modifications is on the side, that possesses the stairs to our second level.  His side also has the opening for the stairs, as his property is a semetric opposite of mine.  I believe he has his Sony "sound bar" HT up on that side. 
Really not sure of the details of the existing construction, but I can't hear any audible conversations out of the neighbors.  Really can't hear the high frequencies unless he opens his doors/windows, etc..  and has it really cranked loud.    I know the Sony Sound Bar really isn't a high end HT system, so I'm sure it doesn't possess a lot of ump on the lower end of the freq. specrum.  We don't get alot of noticable vibrations, etc..

So, the goal is to cut what we do hear, to a modest reduction, without going bankrupt.  If it would work better, and I would get better results, I would definately opt to remove the existing wall and replace with a better solution (even though, if I could do something on the existing wall, and get benefits, I would go for that too).

Only thing is, it appears, it will get tricky, since the wall I need to do is on the stairs side.. so looks like it would be alot of measuring, cutting.. etc.. of different lengths..


Randy S

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Re: Soundproofing The Common Wall
« Reply #1 on: May 26, 2009, 06:12:07 PM »
The first thing we need to look at is how much the stairs are contributing to your noise issue. If we have a transmission path there which im sure we do, this project will not be cut and dry. Especially if we are dealing with LF or Structure impact, simply putting in a barrier and a dampener might not achieve satisfactory results.
You could add MLV w/psa / green glue and a new layer of 5/8" drywall however I need more details in order to be sure you will get something out of it.
Can you provide me with some more detail of the whole assembly? or you can call me direct.
"Really not sure of the details of the existing construction, but I can't hear any audible conversations out of the neighbors. "
This statement leads me to believe you will need to decouple from the structure and that the LF is what is coming through.
Randy Sieg

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