Roxul Flexibatt

I have some leftover Roxul Flexibatt (r-21.5). Are there any known absorption coefficients posted anywhere? I was considering using the leftovers for superchunk style corner traps. Would this be adequate, or should I go for OC 703? Thanks, C

Some user may know better about this but i think the 3pcf (pound per cubic foot) stuff is recomended for that application (Roxul AFB is 2.8pcf and safe'n sound is 2.5pcf). Flexibatt is more or less the equivalent of fiberglass in term of densitiy wich is less or around 2pcf. Here's an answer of Knightfly about a superchunk in a corner :

I think I'd use that rear corner as a good place to store a MASSIVE amount of mineral wool (like a super-mega-uber-chunk) - in other words, fill the entire thing. IF this will be cost prohibitive, then at least line the walls and across the face with minimum 4" RW, and fill the rest with unfaced loose fiberglass.

That maybe an alternative for you. Regards

Can you use it effectively in a superchunks application? Definitely. Read this for some usefull info about density and absorption. Andre

Thanks Andre, Checked out the link, but didn't see any info on anything with as low density as the Flexibatt (2lbs/pcf). Before I go building these superchunk traps, are you sure the Flexibatt won't be too light? :? Thanks again, C

I tried pming you but the system didn't recognize your name :shock: What is you phone number? Email it to me. Short answer, yes it will work well in the superchunk application. Andre