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Rockwool in Australia/bass traps/absorbers
Old 5th July 2011
  #1
Gear Nut
 
Enchilada's Avatar
 

Rockwool in Australia/bass traps/absorbers

Hey guys,

As far as I can tell, insulation in Australia is different to what they sell state-side. I'm planning to build some corner bass traps that will go floor to ceiling (2000 x 580 x 150). Can anyone who understands Aussie insulation let me know if Broadford Soundscreen Plus R2.0 will do the trick? They come in a thickness of 75 so I would put in two panels to make it 150.

I'll have a few panels left over when I'm done with the bass traps. If I frame the remaining panels singularly i.e. 75mm thick, will they do much as absorbers on either the walls or the roof?

Thanks

Ench

P.S. For all you US readers:

2000mm = 80 inches
580mm = 23 inches
150mm = 6 inches
75mm = 3 inches

Old 5th July 2011
  #2
Gear Addict
 

Hey Ench, have you done a search? There are other threads where Aussies have asked similar questions.

Soundscreen is 29kg/m^3 Rockwool so will be suitable enough. If you were to build Superchunks then lighter and fluffier would work out more cost effective.
Old 5th July 2011
  #3
Gear Nut
 
Enchilada's Avatar
 

Quote:
Originally Posted by Sebg View Post
Hey Ench, have you done a search? There are other threads where Aussies have asked similar questions.

Soundscreen is 29kg/m^3 Rockwool so will be suitable enough. If you were to build Superchunks then lighter and fluffier would work out more cost effective.
Did a forum search and Google search and didn't find many specifics. 29kg/m^3 is a lot less the the US [email protected] and [email protected] I hadn't planned on superchunks, just 15mm thick panels that I would put ceiling to floor in each corner. Soundscreen Plus is $60/bag of 6 1350x580

I can get regular R1.5 CSR fibreglass panels 1160x430x75 for $32/bag of 16. My calculations tell me I could put superchunks in all four corners for $64.

But I thought glasswool didn't absorb bass as well as rockwool...
Old 5th July 2011
  #4
Old 5th July 2011
  #5
Gear Addict
 

At the same density, Rockwool has lower gas flow resistivity than Glasswool.

However, don't get too hung up on the "perfect" material. Lots of materials will work well enough in the same situation. It comes down to price, availability, personal preference, whether you particularly want rigid or semi-rigid panels, etc.

Also note that the Bunnings link is not working. Are you changing to Superchunks with that light fluffy stuff?
Old 6th July 2011
  #6
Gear Head
 
paulnajar's Avatar
 

The csr product recommended by my designer is called fibertex 350. He specs it in many big projects. Its 60kg/m3. Yours is half that density. It comes in different thicknesses and sizes.

Denser is better up to 60kg. Beyond this it starts to become reflective.


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Old 6th July 2011
  #7
Gear Nut
 
Enchilada's Avatar
 

Here's a working link to the product.
EarthWool

I'm looking at the AZ17EV which is $61 for a bag of 21.
Old 6th July 2011
  #8
Gear Nut
 
Enchilada's Avatar
 

Here's a working link to the product.
EarthWool

I'm looking at the AZ17EV which is $61 for a bag of 21.
Old 17th July 2011
  #9
Earthwool

Quote:
Originally Posted by Enchilada View Post
Here's a working link to the product.
EarthWool

I'm looking at the AZ17EV which is $61 for a bag of 21.
Yep, I've noticed Bunnings only stock this now - not Rockwool. $26 for a pack of R3.5 at the moment.
I'm going to chase up sources of Rockwool as I'm not convinced the R3.5 will be as effective as the Fibertex 350.
Old 22nd July 2013
  #10
Gear Addict
 
Lolo22's Avatar
 

Quote:
Originally Posted by jrakarl View Post
Yep, I've noticed Bunnings only stock this now - not Rockwool. $26 for a pack of R3.5 at the moment.
I'm going to chase up sources of Rockwool as I'm not convinced the R3.5 will be as effective as the Fibertex 350.
Did you end up using this mate?
Old 17th July 2018
  #11
Im considering getting the Earthwool 2.7 shd for corner superchunks. Would that be good enough at 27kg/m3 or should i go for something lighter at 20kg/m3 for the corner bass traps?
Old 19th February 2019
  #12
Here for the gear
Hey guys,

just wondering if any of you ended up going with any of the earth wool products and if so, how did it go?
Old 10th March 2019
  #13
Rockwool alternative

I wound up using a completely different product, far more dense than the available Bunnings stuff and closer in spec to Rockwool. Unfortunately it is glass fibre stuff, so breathing apparatus when handling is a must!

I think it was a Fletcher's product (link below) which I purchased from the Insulation Centre in Mitcham. Melbourne Insulation | Insulation Specialists | Insulation Australia

Commercial Fit Acoustic Insulation & Acoustic Batts
Old 1st April 2019
  #14
Gear Nut
 
Enchilada's Avatar
 

I did end up using the Earthwool from Bunnings. It was some years ago but I'm pretty sure I made some floor to ceiling bass traps the thickness of two Earthwool batts.

They were good! It took a lot of materials but there was a dramatic improvement to the sound of the room with these and some diffusers installed.
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