Bass Traps: Roxul 80? Will it work?

[putney41]

I am going to build some bass traps and found a local supplier who carries Roxul 80. It is 3 inches thick, the density is 8 lbs per foot, and the ASTM C423 specs are as follows:

125 Hz 0.75, 250 Hz 0.82, 500 Hz 0.89, etc

I've learned through other threads that people are using Roxul 60, but haven't seen anyone using the Roxul 80. Is there a reason for that? Or will it work as well if not better than other products? I've attached a link with the specs. Thanks.

http://www.roxul.com/graphics/RX-NA/...d80-8-7-07.pdf

[Ethan Winer]

Originally Posted by putney41

found a local supplier who carries Roxul 80.

That will be fine.

[putney41]

Originally Posted by Ethan Winer

That will be fine.

Thanks, Ethan. You are the guru, brother! I'm planning on making them 6 inches thick, but I'm not sure whether to put any plastic or Kraft paper over the top. I've read that the higher frequencies reflect a little more if you use paper or plastic. Should I test the frequency responses with just the Roxul and then adjust accordingly?

[Glenn Kuras]

You can use facing to keep some of the highs in the room but just don't use it in any of the early reflection points of the room.

Glenn