Can this be used for Bass Traps ?

vestast

vestast

Gassy Member
Just curious if this mineral wool can be mounted on plywood and covered with cloth to hang in corners as bass traps. Everything I've read so far indicates that rigid wool should be used. This stuff is about 3.5 " thick but isn't rigid....

http://www.roxul.com/sw47802.asp

Thanks for your help !

Dave
 
Dave,

> curious if this mineral wool can be mounted on plywood and covered with cloth to hang in corners as bass traps. <

I didn't see any absorption specs for that material, so I suggest you get the real deal (rigid fiberglass or rock wool) rather than risk going to all that trouble and having the traps not work well. But I do have another comment: When placing rigid fiberglass off a wall or straddling a corner, you'll do better to not attach it to wood.

--Ethan
 
Ethan Winer said:
I didn't see any absorption specs for that material, so I suggest you get the real deal (rigid fiberglass or rock wool) --Ethan
Click to expand...

Its Rock wool

ROXUL® products are mineral wool fibre insulations made from basalt rock and steel slag. This combination results in a non-combustible product with a melting point of approximately 2150°F (1177°C), which gives it excellent fire resistance properties. ROXUL mineral wool is a water repellent yet vapour permeable material.

http://rw-misc.inforce.dk/graphics/RX-NA/Canada/products/safeandsound/ss_tech.pdf

Dimensions and Density:
Steel Stud:
16.25” x 48” x 3”
(413 mm x 1219 mm x 76 mm)
24.25” x 48” x 3”
(616 mm x 1219 mm x 76 mm)
Wood Stud:
15.25” x 47” x 3”
(387 mm x 1194 mmx 76 mm)
-with flexible edges
23” x 47” x 3”
(584 mm x 1194 mmx 76 mm)
-with flexible edges
Density:
2.5 lbs/ft3 (40 kg/m3)
Key Application Qualifiers:
• Easily cut
• Non-combustible
• Fire resistant (due to its high melting temperature)
• Excellent sound absorbency
• Chemically inert
• Does not rot or sustain vermin
• Does not promote growth of fungi or mildew
• Low moisture sorption
• Water resistant
• CFC and HCFC free product and process
• Made from natural & recycled materials
Note:
As ROXUL Inc. has no control over installation design and workmanship, accessory materials or application conditions, ROXUL Inc. does not warranty
the performance or results of any installation containing ROXUL Inc’s. products. ROXUL Inc’s. overall liability and the remedies available are
limited by the general terms and conditions of sale. This warranty is in lieu of all other warranties and conditions expressed or implied, including
the warranties of merchantability and fitness for a particular purpose.
Acoustical Performance:
ASTM C 423
CO-EFFICIENTS AT FREQUENCIES
125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz NRC
Safe‘n’Sound 0.52 0.96 1.18 1.07 1.05 1.05 1.05
Other ROXUL Products:
Please consult ROXUL for all your insulation needs.
We have an extensive range of products for all
applications from pipe insulation to commercial
products to residential batts. ROXUL invites all
inquiries and will act promptly to service all of your
requirements.
ROXUL INC. 551 Harrop Drive, Milton, Ontario L9T 3H3 Tel: 905 878-8474 Fax: 905 878-8077
www.roxul.com Sales Office - Tel: 1-800-265-6878, Fax: 1-800-991-0110
Revised: June 1, 2002
Supercedes: February 28, 2001

SoMm
 
Thanks for the replies guys.

So it can't be mounted on plywood. I'm reading your acoustic articles right now Ethan so I see why now.

The reason I was asking if I could use this is because I have some extra sheets of it lying around and the specs seem to be not bad:

125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz NRC
0.52 0.96 1.18 1.07 1.05 1.05 1.05

Thanks again Ethan and SOMM.

Dave
 
Dave,

> 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz NRC
> 0.52 0.96 1.18 1.07 1.05 1.05 1.05

Those are great specs. When you get it across a corner the absorption will be even higher.

--Ethan
 
What's interesting, is that the literature states the dimension of the Roxul for wood studs on 16" centers to be 15-1/4".
When I was installing the rockwool in my studio, the studs are 16" on center - so that makes an inside dimension of 14-1/2", but the RocKWool comes in 16" widths.

I had to trim about 1" off of EVERY SINGLE PIECE I installed! :mad:

Looks like these guys have taken that into account and done that for you!
Looks like a great product. I'm sure it'll work out fine.

RockWool in the Live Room:
 

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Man that's a huge room.

I just have to figure out a way to put them in my corners now. I was thinking of puting wood frames on each side wall 24" from the corner then cuting the insulation and stacking it on it's side stacked up on each other from floor to ceiling and covering them with cloth.

Think that would work ok ?
 
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