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can we stack 2" boards togheter?
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rekloos
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#1
17th February 2011
Old 17th February 2011
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can we stack 2" boards togheter?

cannot get 4" or anything above 3.0 PCF around here so is this doable?
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17th February 2011
Old 17th February 2011
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^^^ Yes. But don't glue them together. Just place the panels adjacent, and wrap them in fabric to keep them together. Some people use a wood frame etc and that's fine too.

--Ethan

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17th February 2011
Old 17th February 2011
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Quote:
Originally Posted by Ethan Winer View Post
^^^ Yes. But don't glue them together. Just place the panels adjacent, and wrap them in fabric to keep them together. Some people use a wood frame etc and that's fine too.

--Ethan

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why not glue together?
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17th February 2011
Old 17th February 2011
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Because using too much glue will add a barrier and could interfere with the absorption.

--Ethan
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17th February 2011
Old 17th February 2011
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ok thanks.
rekloos
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17th February 2011
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AWESOME!
That's what I was thnkin Ethan, just wrap them in fabric....
What about the FSK foil?
Depending on the application, can we do :

1- FSK facing the studio then 2nd board on top with FSK facing the wall.

2- No FSK at all, just tear it off

3- FSK facing studio then 2nd board w/FSK taken off
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17th February 2011
Old 17th February 2011
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3M sells an adhesive spray that binds the batts together (worked well for me with oc703)...you could always just spray the 4 corners and a quick dab in the middle to get the batts to stick well enough to wrap the fiber. that shouldnt cause any issues like ethan stated above ^^
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17th February 2011
Old 17th February 2011
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Quote:
Originally Posted by rekloos View Post
1- FSK facing the studio then 2nd board on top with FSK facing the wall.
No, a facing should be on one side only, toward the room.

--Ethan
rekloos
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17th February 2011
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Quote:
Originally Posted by Ethan Winer View Post
No, a facing should be on one side only, toward the room.

--Ethan


rekloos
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18th February 2011
Old 18th February 2011
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So i found a local distributor who can get this for me:

Knauf Insulation Board with ECOSEĀ® Technology

but m confused a bit about the white and silver foil option, which and why- what do you guys think? i def want the 2" 6.0 PCF for bass control and then the rest of the frequencies i'll have to figure out....


thx...
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18th February 2011
Old 18th February 2011
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I imagine either facing will be fine, but I haven't actually tested those specific products to compare them.

--Ethan
rekloos
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18th February 2011
Old 18th February 2011
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Quote:
Originally Posted by Ethan Winer View Post
I imagine either facing will be fine, but I haven't actually tested those specific products to compare them.

--Ethan
Thx Ethan.....And I guess they also have the no foil version- would that be better for bass traps?
#13
19th February 2011
Old 19th February 2011
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Quote:
Originally Posted by rekloos View Post
they also have the no foil version- would that be better for bass traps?
No, that would be worse.

--Ethan
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23rd February 2011
Old 23rd February 2011
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Quote:
Originally Posted by rekloos View Post
So i found a local distributor who can get this for me:

Knauf Insulation Board with ECOSEĀ® Technology

but m confused a bit about the white and silver foil option, which and why- what do you guys think? i def want the 2" 6.0 PCF for bass control and then the rest of the frequencies i'll have to figure out....


thx...
Here is the scoop. ECOSE i is manufactured from naturally occurring and/or recycled raw materials and bonded using a bio-based technology free from formaldehyde, phenols, acrylics and with no artificial colors, bleaches or dyes. ECOSE reduces energy consumption and pollutants stemming from the production process and is therefore more fully recyclable than standard mineral wool or rigid fiberglass.
As far as which facing to use, if you can afford it then go with the white facing as the low end numbers are better and seems to reflect more of the high end back into the room (a good thing). Don't worry about the 6 PCF as it is very expensive and no better then then 3.0 PCF if the traps are 4" or thicker. As far as I can tell from handling the stuff is the 3.0 PCF is more rigid then the OC 703, Oh and does not leave you itching when handling it.
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rekloos
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23rd February 2011
Old 23rd February 2011
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Quote:
Originally Posted by Glenn Kuras View Post
Here is the scoop. ECOSE i is manufactured from naturally occurring and/or recycled raw materials and bonded using a bio-based technology free from formaldehyde, phenols, acrylics and with no artificial colors, bleaches or dyes. ECOSE reduces energy consumption and pollutants stemming from the production process and is therefore more fully recyclable than standard mineral wool or rigid fiberglass.
As far as which facing to use, if you can afford it then go with the white facing as the low end numbers are better and seems to reflect more of the high end back into the room (a good thing). Don't worry about the 6 PCF as it is very expensive and no better then then 3.0 PCF if the traps are 4" or thicker. As far as I can tell from handling the stuff is the 3.0 PCF is more rigid then the OC 703, Oh and does not leave you itching when handling it.
Oh great- u had a go at it then?How do u like it?
Thing is i can't get 4" so i figured just get the 2" 6.0 PCF and that'll do it.......or do u recomend geting two of the 2" 3.0 PCF and stack them togheter? These are my only options right now.......
And i'm still waiting for a price quote so i'm not sure what's best from a financial point of view. I think the 2" 3.0 PCF goes for about $14 a 2x4 sheet....
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23rd February 2011
Old 23rd February 2011
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Quote:
Originally Posted by rekloos View Post
Oh great- u had a go at it then?How do u like it?
Thing is i can't get 4" so i figured just get the 2" 6.0 PCF and that'll do it.......or do u recomend geting two of the 2" 3.0 PCF and stack them togheter? These are my only options right now.......
And i'm still waiting for a price quote so i'm not sure what's best from a financial point of view. I think the 2" 3.0 PCF goes for about $14 a 2x4 sheet....
Go with the 3.0 2" and stack it. I would not be surprised if the 6 pound is close to twice the cost. BTW don't buy all of it with the white facing as it should only be on the 2" panel that is facing the room. If you buy it all with the facing you will end up paying for something you will need to pull off.
Was that price you got with or without facing?
rekloos
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#17
23rd February 2011
Old 23rd February 2011
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Quote:
Originally Posted by Glenn Kuras View Post
Go with the 3.0 2" and stack it. I would not be surprised if the 6 pound is close to twice the cost. BTW don't buy all of it with the white facing as it should only be on the 2" panel that is facing the room. If you buy it all with the facing you will end up paying for something you will need to pull off.
Was that price you got with or without facing?
These are the quotes i got for what they have in stock:

KNAUF - 2x4 [8s/f] - FSK foil on 1 side
1in
$0.85-s/f
$6.80/sheet

2in
$1.65-s/f
$13.20/sheet

However, this is not the ECOSE line......
I'm still trying to figure out how many i need as i'm working on 2 studios (mine and a friend's) right now. Also, if i get the ones without foil i have to buy it by the case while ASJ or FSK i can get as individual sheet.
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23rd February 2011
Old 23rd February 2011
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Quote:
Originally Posted by rekloos View Post
These are the quotes i got for what they have in stock:

KNAUF - 2x4 [8s/f] - FSK foil on 1 side
1in
$0.85-s/f
$6.80/sheet

2in
$1.65-s/f
$13.20/sheet

However, this is not the ECOSE line......
I'm still trying to figure out how many i need as i'm working on 2 studios (mine and a friend's) right now. Also, if i get the ones without foil i have to buy it by the case while ASJ or FSK i can get as individual sheet.
If you are doing even one room I would think you will need way more then a case. One case is going to get you 3 4" panels which really is not that much. And if you tell me a case comes with 12 2" pieces then that still is only 6 4" panels which is kind of minimum bass trapping to start off, in a avg small room. Needless to say I would have them give you pricing without so you can really see the prices.
#19
24th February 2011
Old 24th February 2011
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I Will just add a new question to the thread:

What if we put a limp membrane between both boards????

Or even better one board with frk faced and over it the plain one, so you will have:

FG frk FG

Quick thoughts: better low absorption still good high and mid absorption. (nice for frz?)


Someone did this? Any experience about?
#20
24th February 2011
Old 24th February 2011
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You do not want to have facing between the sheets. Only on the front one.
#21
24th February 2011
Old 24th February 2011
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Yeah? Why is that how do I mess it al up?

Haha I was all exited! XD
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24th February 2011
Old 24th February 2011
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Quote:
Originally Posted by Sebastian Vera View Post
Yeah? Why is that how do I mess it al up?

Haha I was all exited! XD
No problem dude!!
#23
25th February 2011
Old 25th February 2011
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One more question Glenn!!!

What if I space the plain panel like this

Wall /FG/frk/airgap/plain FG

Would the plain panel affect the low freq absorption in a bad way?

Would the frk be beneficed by an air gap from the wall? I guess frk acts like a pressure absorber so there is no need for that gap, but I'm not sure about this
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29th December 2012
Old 29th December 2012
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I just bought some 703 panels with a white facing on one side. Just to clarify, when making a 4" bass trap out of 2 2" panels.... I should remove the paper from the 2nd piece which faces the wall and I should leave the paper on the front piece and face the paper towards the room?? If I feel like my room is bright sounding, would it be better to face the paper to the rear?
#25
29th December 2012
Old 29th December 2012
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yes on both questions
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