Author Topic: Low-level Noise - Townhouse Shared Wall  (Read 5188 times)

KennyD

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Low-level Noise - Townhouse Shared Wall
« on: February 21, 2010, 03:52:15 PM »
My neighbour seems to enjoy listening to loud talk radio from 8am until 10pm every day.  The low level, muffled sounds of the voices are very bothersome.  If I put my ear to the wall, it sounds like the radio is actually right in the wall!  The sound is emitted from a single room of the neighbour's house, but it travels through the whole common wall, upstairs and downstairs.  Discussion with the neighbour is not a solution.

The actual division is drywall, empty space between studs, cinderblock wall, and then space/drywall on the other side.  So basically the whole shared wall is a transmitter of vibrations.  The most drastic measure I am considering is removing my walls and going with acoustic insulation, sonopan panels and then drywall.  What I am wondering is, for this kind of noise could I just go with sonopan panels and another layer of drywall installed over the existing walls?  I would hate to do that and it not be effective.  But obviously it's a heck of alot easier and less messy to not remove the walls.

What about the spray foam, is that fairly effective in this kind of scenario?

Thanks for any thoughts.

Randy S

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Re: Low-level Noise - Townhouse Shared Wall
« Reply #1 on: February 22, 2010, 07:06:09 PM »
As you stated, sound is traveling upstairs and downstairs so addressing the wall will end up as a partial solution to the problem. The floor, ceiling and adjoining walls will still remit sound at a certain value.
Soundproofing is best done at the source before it gets into the structure, once in the structure your not catching it.
So addressing the receiving side will deliver a far lesser value, therefore decoupling will add the greatest reduction value to your results.
You will have to float the shared wall if the studs are directly in contact to the cinderblock wall.
Then you can use Green glue and 2 sheets of Drywall plus insulation.

Randy Sieg

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888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

KennyD

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Re: Low-level Noise - Townhouse Shared Wall
« Reply #2 on: March 06, 2010, 02:43:58 PM »
Thanks Randy, I really appreciate your reply.  I think what I am going to try in order to avoid a tear-down of the wall, is blowing cellulose into the existing wall (unfortunately only 1.5" air space because the studs are flat and attached directly to the cinderblock), then green glue and another sheet of drywall.  I think that should bring the noise down to a tolerable level...I don't expect that I can eliminate it completely since it is already in the structure.

Have you ever heard of a product call "Sonopan", which is dense sheets of acoustic insulation that are installed with resilient channels?  I think it probably does the same thing as green glue but I wonder if it is even more effective.

http://www.materiauxspecl.com/en/pdf/sonopan.pdf

Thanks again Randy!



Randy S

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Re: Low-level Noise - Townhouse Shared Wall
« Reply #3 on: March 06, 2010, 04:27:33 PM »
The most important thing about sound control is to understand how each principle works based on the type(frequency and db level/ airborne or structure borne)of sound your dealing with.

As I tell all my clients, you can buy the best materials on the planet and if you install them incorrectly you will get some results at best if any results at all.

Why dont you give me a call at my office when you have some free time and I will better explain potential mistakes before you make them. My direct contact info is below.

A few minutes of time can equal $1,000's saved in costly errors.
Randy Sieg

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

 

anything