hello everyone i really need a good straight up piece of advice here im in the uk im going to build some acoustic panels 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?
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.