Is general fibreglass ok for acoustic treatment?

Mattayus

Sir Groove-A-Lot
Jan 31, 2010
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Cambs, UK
www.numbskullaudio.com
I'm making some acoustic panels for my mix room as it's lacking absorption (i only have minimal treatment at the moment), but rather than buy materials I spotted a roll of general insulation fibreglass in my dad's garage the other day :lol: Will that work to any decent degree or am I better off buying something that's purpose-made for acoustic treatment?
 
See if you can get hold of Knauf/Rocksilk RS60... it's pretty good for bass traps. Pretty much the same as OC703 or Rockwool
 
Higher density is not = high performances.
It depends on the porosity because you can have a very very dense material that doesn't aborb but reflect.

That's what I was thinking. I'm sure after a certain density it becomes *too* dense. Makes sense!

FWIW, I'm only really looking for a "for now" solution, I'm not interested in kitting this room out with top of the line shit, because my workload doesn't justify it for a start!

However...

See if you can get hold of Knauf/Rocksilk RS60... it's pretty good for bass traps. Pretty much the same as OC703 or Rockwool

... the stuff in my Dad's garage turned out to be just this :lol: So I've brought it home, now it's off to find some wood for the frames! :headbang:
 
For example I found some panels of fiberglass in my shop that are more than 100kg/cm3.... it's way too dense. The big rolls of fiberglass are around 40kg/cm3 (at least in my shop) and they are way more usefull than the denser panels.