So my subject line says it all. I’m “finally” looking at making my panels. Have my plans and layout all drawn up.
I’ve been reading a lot about different types of insulation. I know that OC 703/705 is the “go-to,” but I’ve been hearing great things about Rockwool Safe’n’Sound. It’s markedly less expensive, more to a package, and the acoustic qualities are quite good. In fact, esp if two-layers (3" x 2) it is particularly good for bass traps. Sound attenuation is better at 125 Hz and below, without the compromised high end that you see in 705 FRK.
I have one concern, and one only: it is not a rigid panel. If I use this stuff, am I eventually gonna see bumps in the covering fabric cuz it starts to sag? That would not make me happy.
Has anyone used this stuff? Could you speak to the sag issue? Maybe it’s fine if you use good fabric and pull it taut.
I’m very eager to hear what kind of experience y’all have had with this stuff.