noob... bass trap query

[britesynth]

hi everyone!

im planning to build bass trap panels for my small room and im wondering if its okay to use insulation fibers rather than using rockwool/rigid fiberglass, its hard to find rockwool here in my place, all i could find are fiber insulations... would 4" of fiber insulation be as effective as 4" of rockwool?

any ideas on how i could possible make one? thanks in advance!

[kickdrummer58]

are you talking about insulation such as r30? I used the same and am wondering the same thing. Mine is 9" thick but i compressed it into some homemade panels that are 5" thick. Im wondering as well if this is a good idea?

[Ethan Winer]

Compressed fluffy insulation works fine, but it's more work to do that and it doesn't have clean edges and a smooth front. Some people use chicken wire to make the front surface look better and smoother.

--Ethan

[britesynth]

ah i see... i think i really have to look for rockwool, thanks mr. winer!

[Glenn Kuras]

Just to add. Use about 12" of the fluffy stuff to make it 4" thick.

Glenn

[britesynth]

hi mr. glen,

hmmn not only do i have to compact it really hard i think it will be costly too...

rockwool rockwool rockwool...

e thanks anyways!

[Glenn Kuras]

Originally Posted by britesynth

hi mr. glen,

hmmn not only do i have to compact it really hard i think it will be costly too...

rockwool rockwool rockwool...

e thanks anyways!

thumbsup

[JLiRD808]

hey are there any other proportions of the compressed fluffy stuff that are adequate...say compressing 9" down to 2", etc?

Also, are u saying that compressing 12" of pink fluffy down to 4" is the equivalent of 4" of 703 maybe? 2" of 703"?

THANKS!

[Elug]

Originally Posted by JLiRD808

hey are there any other proportions of the compressed fluffy stuff that are adequate...say compressing 9" down to 2", etc?

Also, are u saying that compressing 12" of pink fluffy down to 4" is the equivalent of 4" of 703 maybe? 2" of 703"?

THANKS!

it depends on the initial pcf. ex OC r-30 9" has an overll density at 0.5. half that and the denisty double to one ant its 4.5". and half( sayin that u compress) to 2.25" the its 2pcf. and to get at least a 3pcf like the OC 703 then the 9" should compressed to 1.125" to get a 4pcf panel to work with. tip if u do decide on on what depth, then pick a multiple of 9 and comprees(half) accordingly. I the overall depth( height when stacked of the OC ) 27.5". i know not a clean multiple of 9, where the pcf can be calculated easily, but i based it of the material i was using since i didnt want to spend much and fortunately for me it exactly the biggest width of the lumber i used. so it was compressed 3.375" giving me a panel of that thickness at 4pcf . did it make a difference yes, is it really effective idk, but will do more research for a future build and ask question on this forum, cuz it rocks( newb here)