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Window soundproofing Kevin 03-30-2008
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Posted by Kevin on March 30, 2008, 1:42 pm
I'm constructing a room in the crawl space of my house, that will be used in
part for a home theather, and I want to make it as soundproof as possible.
This room will have one 5040 window. Home Depot tells me that they can
supply windows that have 3/16" or 1/4" thick panes, as opposed to the normal
1/8". I'm wondering if any one has experience or information as to the
soundproofing effectivesness of these thicker windows?

One alternative I have considered is to frame the window opening using 2x4's
in the 2x6 wall and installing a regular 1/8 pane window as normal. Then
installing a second window on the inside of the 2x4 opening. this would
leave an approx 2" airspace between the two windows, which could present a
cleaning problem with the inevitable collection of dust in this space, (the
windows are going to be sliders), and it might look a little weird. If the
thicker panes are substantially effective, I think I'd would rather go that
route because of the normal appearance.

I'd apprecite any comments on the thicker pane windows or the double window
arrangement, and any other suggestions as to how to make this window as
soundprrof as possible.

TIA
Kevin









Posted by Wayne Whitney on March 30, 2008, 3:53 pm

> Home Depot tells me that they can supply windows that have 3/16" or
> 1/4" thick panes, as opposed to the normal 1/8". I'm wondering if
> any one has experience or information as to the soundproofing
> effectivesness of these thicker windows?

Your best bet along these lines would be to get a double pane unit
with the two panes of unequal thickness, say one 1/8" and one 1/4".
That way the sound has to go through three different layers (each pane
and the air gap in between), each of which will have a different
resonant frequency, so hopefully all the frequencies will get damped
sufficiently. After everything is built, you can always add a third
pane as an interior storm window--again pick a different thickness.

Cheers, Wayne

Posted by CWatters on March 30, 2008, 4:17 pm

> I'm constructing a room in the crawl space of my house, that will be used
in
> part for a home theather, and I want to make it as soundproof as possible.
> This room will have one 5040 window. Home Depot tells me that they can
> supply windows that have 3/16" or 1/4" thick panes, as opposed to the
normal
> 1/8". I'm wondering if any one has experience or information as to the
> soundproofing effectivesness of these thicker windows?

This site says thicker glass is better...

http://www.windowstoday.co.uk/sound-insulation.htm

Quote: 1. The transmission loss is increased by 6decibels (db) each time
the frequency of a measurement or the mass per unit of a single layer
partition is doubled. End quote

So it would appear going from 1/8" to 1/4" should reduce noise by 6db.

Some years ago they built a motorway next to the house I was living in. I
was told at the time that a 6 inch air gap beween two sheets of glass was
optimum for noise reduction rather than smaller air gap used for thermal
insulation.




Posted by Glenn on March 30, 2008, 5:40 pm

wrote in message
>
>
> So it would appear going from 1/8" to 1/4" should
> reduce noise by 6db.
>
I built 2 radio stations. Stopping sound through the
glass is simple. Nothing fancy like different
thicknesses and all that stuff. Any glass will work.
Just use 2 panes and space them uneven as in maybe 1
inch apart on the top and 3 inches on the bottom. The
sound will lose itself in there bouncing around. You
still need to double stud the walls etc though. I know
this works.


Posted by tbasc@bellsouth.net on March 31, 2008, 7:51 am
>
> > So it would appear going from 1/8" to 1/4" should
> > reduce noise by 6db.
>
> I built 2 radio stations. =A0Stopping sound through the
> glass is simple. =A0Nothing fancy like different
> thicknesses and all that stuff. =A0Any glass will work.
> Just use 2 panes and space them uneven as in maybe 1
> inch apart on the top and 3 inches on the bottom. =A0The
> sound will lose itself in there bouncing around. =A0You
> still need to double stud the walls etc though. =A0I know
> this works.

Glenn,
What was the frame material?
T

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