diy acoustic panels - the best insulation??

[Icecube1]

Originally Posted by daniel_griffiths

id like to know what insultion is best and i dont want it to flop and sag so it has to be rigid will rockwool rw3 be ok? or is there something better and more rigid?

The "best" insulation depends how thick you are planning to make the panels and what frequency range you are trying to target?

However, for a 100mm thick panel RW3 will be fine, apart from if using as a cloud where you will need a lightweight frame to prevent it sagging.

[Glenn Kuras]

If the panel is made in a wooden frame correctly it will not sag or flop. I also agree with the above but don't over think it. The point is to make them thick enough and straddle corners to maximize the effect.

[daniel_griffiths]

thanks very much

[Gdupproductions]

Originally Posted by daniel_griffiths

thanks very much

Anything between 40/50 kg-m3 at 4inches will do it.
I'd be carefull with RW3 becuz it has 60 kg-m3 so it's a whole lot denser.

High density and high thickness doesn't let any sound trough and might reflect.

[daniel_griffiths]

Ok I thought 60kg would be a bit better than 45 I will stick with 45 then

[Myriad Abstruse]

Being from the UK also, here is a product that I will be using for my bass traps. The absorption figures are much better than Rockwool at 45kg/m3 and 100mm thick.

Rock Universal Slab RS45 100 x 1200 x 600mm _283_6m2_2fpack_29