Auralex Mineral Fiber Insulation 4" @ TrueSoundControl.com

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Auralex 4" Mineral Fiber Insulation
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The best way to tighten up a room's sound and make it more soundproof in the process is to design it right, build it tight and make the partitions as dense as possible. That's where Auralex Mineral Fiber Insulation comes in.

It's WAY more dense than "the pink stuff" and is specifically designed for acoustical usage. It yields much better bass trapping, overall absorption, thermal characteristics, moisture absorption and sound transmission loss (isolation) than any other product we've found.

Use it as insulation in your wall/floor/ceiling soundproofing construction or cover it with acoustical cloth and hang it on the wall or ceiling for a viable alternative to acoustic foam panels.

Advantages vs. Standard Fiberglass:

better sound isolation and acoustic absorption
lower moisture absorption
lower flame spread and smoke density
1200° burn point vs. 650°
8 lb./cubic ft density

Freq.	NRC
125 Hz	1.11
250 Hz	.91
500 Hz	1.07
1 KHz	1.03
2 KHz	1.06
4 KHz	1.07
Overall	1.00

NRC: 1.00*
Size: 2' x 4' x 4" per piece (also available in 1" 2" & 3" thicknesses)
Qty: 3 pieces per box
Coverage: 24 sq. ft.
Flame Retardancy: Class A

*Note: While 2" and 4" Auralex Mineral Fiber offer virtually the same absorption between 250Hz and 4kHz, 4" is dramatically more effective at 125Hz. While 2" offers a 125Hz absorption coefficient of .32, 4" offers an absorption coefficient of 1.11. It also bears mentioning that 4" Auralex Mineral Fiber will offer higher levels of sound transmission loss (STL) than will 2" due to the increased mass 4" offers.


This image shows Auralex 2" Mineral Fiber Insulation in a 2'x4' stud wall. Notice the use of stringers.	Auralex Mineral Fiber Insulation may be used between floor joists for enhanced sound transmission loss.

Related Items:


Auralex 1" Mineral Fiber Insulation	Auralex 2" Mineral Fiber Insulation	Auralex SheetBlok (4'x30' roll)	Auralex RC-8 Resilient Channel	Auralex U-Boats Floor Floaters

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