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Author Topic: Acrylic Sheet  (Read 3933 times)

scottchow23

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Acrylic Sheet
« on: May 02, 2013, 01:00:38 AM »

After reading several threads in the forum, I decided to get an Acrylic Sheet for windows plug. The forum mentioned that the sheet should be at least 1/4" or 3/8". I contacted a local store, and they told me that they also have 1/2", 3/4" and even 1" sheet in stock. My question is, regarding the sound proof effect, is it that the thicker, the better? Thanks.

Randy S

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Re: Acrylic Sheet
« Reply #1 on: May 02, 2013, 03:12:55 PM »

use 3/8" thick, this thickness is the diminishing point of return going thicker is not going to gain you any more reduction for the cost..the air gap is what is important, more gap better reduction.
Randy Sieg

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supersoundproofing

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Re: Acrylic Sheet
« Reply #2 on: May 05, 2013, 01:14:29 AM »

Hi Scott
While answered before, I think a little more explanation is in order:

The cost benefit ratio kicks in here:   Something is better than nothing: 100% better than nothing. (1/8" thick).  Then 1/4"  blocks better by 50%, then 3/8 blocks 25% better than 1/4", the 1/2" is better by 10%, etc.  So the cost goes up exponientially, the benefit goes down... 

We've found 1/4" is the best from a cost/benefit standpoint, but if you really must have every last STC point, 3/8" is the choice, but be prepared to pay more, much more.
Anything over 3/8 is wasting money...

As Randy says, It's the airgap, mostly.

BJ
Super Soundproofing Co
www.soundproofing.org

johnbergstromslc

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Re: Acrylic Sheet
« Reply #3 on: May 05, 2013, 07:03:26 PM »

Hi Scott
While answered before, I think a little more explanation is in order:

The cost benefit ratio kicks in here:   Something is better than nothing: 100% better than nothing. (1/8" thick).  Then 1/4"  blocks better by 50%, then 3/8 blocks 25% better than 1/4", the 1/2" is better by 10%, etc.  So the cost goes up exponientially, the benefit goes down... 

We've found 1/4" is the best from a cost/benefit standpoint, but if you really must have every last STC point, 3/8" is the choice, but be prepared to pay more, much more.
Anything over 3/8 is wasting money...

As Randy says, It's the airgap, mostly.

BJ


You'll find that 1/4" is too flimsy to make a good plug.  Even though it's harder to cut & fabricate, go with 3/8".