I know that Owens Corning 703 and 705 are popular components of DIY panels. As I was strolling through the local BORG, I found some acoustic ceiling tiles with a backing that looks similar but is 5/8" thick. Having never seen 703/705, can you stack two or three of these ceiling tiles to get something similar? (I think you can peel off the white covering.)
That's the right stuff, and you can peel off the plastic facing and stack them together. The only downside is it's pretty expensive if you plan to make many panels. And those ceiling tiles are so thin you'll need 4-8 of them to make each final panel.
Go to my website (click on signature), then to the HT DIY Projects page. There you will find links to half a dozen DIY pages (including my own) on acoustical treatment.
I know that thicker is better (at least for helping reduce lower frequencies), but how thick is necessary for a room that fails the "clap test?" My room is horrible, and dialog from my center channel is getting messed up from reflections off my back wall. Due to the room shape I've got the couch placed right against the rear wall which can't be helping either. I'd like to have 2" thick panels when finished, how much can you compress fiberglass? Will 2" thick panels provide any help in the mid/upper frequencies? This looks like a simple fun project I'd like to try. Thanks. Nat Ward
I'll throw in a tip here. One of our DIY "meeets" was in my garage where we made some panels. For outer covering, we used burlap, which is very acoustically open material. I went to a Hobby Lobby store and found they had burlap in about a dozen colors! So, it's possible to have a WAF-friendly acoustic absorber (let her pick the burlap color). Also, it's a far better looking material than I thought it would be. I had imagined the look of an old burlap potato sack when I heard of it being available as yard goods.