soundproofing basement - QuietZone Acoustic Batts?

[Rob]

I'd like to reduce the sound transmission from upstairs into the
basement; it doesn't have to be 100% soundproof. Has anyone tried
QuietZone Acoustic Batts
(http://www.owenscorning.com/around/sound/products/quietzone.asp)? I
was thinking of insulating between the ceiling joists with this. How
is it different from regular insulation?

Thanks for any responses!
Rob

[CLSSM00X7]

They will help but do you have a way to place them across the entire ceiling?
It will better the noise problem but it won't stop it. I'd beat the shit out of
whoever is making the noise if I were you. Kidding!

candice

[Thomas G. Baker]

Rob wrote:

Are you dealing with impact sounds or air borne sounds? A carpet or
floating floor help with the impact sounds. Sealing all flanking paths
and gypsum board on resilient channels + batts will help with air borne
sounds.

TB

[Joseph Meehan]

Check out:

http://www.soundproofing.org/

for some ideas.

If you can do it, a couple of layers of drywall is the most bang for the
$?£. If you can mount it on isolation strips it is even much better.
Remember to close off or treat any place there may be an air exchange like
air ducts air returns or laundry shoots.

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math

"Rob" <rm11...@yahoo.com> wrote in message
news:9d11b6b.02091...@posting.google.com...

[Steve Manes]

This really should be in a FAQ for this newsgroup. No, this will not
appreciably reduce sound transmission to another room.

There are two distinctly different types of acoustic treatments. One
treatment reduces the apparent noise level _inside_ a room. That's
what stuff like carpet, acoustic tile, etc seeks to do. In essence
you're trying to make the room sound like it has no walls.

The other tries to contain noise within the room. That can be
accomplished only with mass (concrete walls, very thick drywall, very
heavy doors, etc), airtight walls and by structural decoupling of the
room with trick devices like neoprene vibration isolators. The basic
theory behind the latter is that you want to burn out sound's energy
by converting it to mechanical energy. In double wall construction
sound hitting the inner wall is converted to mechanical energy, passed
through it to become acoustic energy again, back to mechanical energy
at the outer wall and then once again to acoustic energy.

Wall insulation is sound absorbent but doesn't reduce sound
transmission all that much except at a limited frequency band. What
it does is reduce the "drum" effect of a hollow cavity between two
walls caused by standing waves. It has some mechanical properties of
its own but almost all of the sound attenuation is being done by the
wallboard. In other words, you'll get better results from adding
another layer of drywall.

------------------------------------------=o&>o----
Steve Manes, Brooklyn, USA
www.magpie.com