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20th April 2009
| #1 |
| Gear nut  Join Date: Nov 2008
Posts: 87
Thread Starter | Rigid Insulation Comparisons (3 options help me decide the best) so I cant find an oc 703 dealer where i am, but i found a dealer with a couple of equivalents, and the absorption numbers look like they dwarf the 703 across the board. so i was wondering if too much is too much? is 703 the standard because its absorption properties are "just right" compared to others? the roxul RHF 40 4" has numbers above 1 all the way across 125-4000k? am i reading this wrong? so heres my 3 options. id have to order the 703 online and the other 2 are available locally. Which one should i use. thanks guys http://www.owenscorningcommercial.co...s700Series.pdf http://www.crossroadsci.com/LinkClic...k.pdf&tabid=73 http://www.crossroadsci.com/LinkClic...F.pdf&tabid=74 |
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20th April 2009
| #2 |
| Gear Guru  Join Date: Oct 2002 Location: New Milford, CT, USA
Posts: 12,050
|  You want as much absorption as possible, down to as low a frequency as possible. Absorption specs are often misleading, not due to fraud but just because of all the variables. This article explains it all: Alternative Test Methods for Acoustic Treatment Products --Ethan
__________________ Ethan's audio book is coming! |
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20th April 2009
| #3 | |
| Lives for gear Join Date: Aug 2006
Posts: 845
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20th April 2009
| #4 |
| Gear nut Join Date: Nov 2008
Posts: 87
Thread Starter | edmonton alberta canada |
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22nd April 2009
| #5 |
| Lives for gear  | Go Roxul The Roxul products should be absolutely fine. 3 to 4 pcf for most purposes. Go higher density if you are straddling corners. I seem to remember that Roxul HT is the least toxic product in this thread. Safer than Cotton etc. The Comparative Safety of Rockwool, Fiberglass, and Organic Fibers (a review) DanDan |
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22nd April 2009
| #6 | |
| Lives for gear  Join Date: Jun 2006 Location: Savannah, GA
Posts: 4,339
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