Originally Posted by silverfox64
LOL...u guys are great!
Insulation is for both sound and to keep the basement warmer in the winter.
Thnx 4 replies!
One thing that hasn't been mentioned here yet, but is in other threads that you may want to look into as well as other construction related sites, are issues related to trapping moisture. Although you didn't mention it in your original post, I'm gathering by this that you're looking to do this in a basement? If you will be framing and insulating along your exterior basement walls, you need to be careful about trapping moisture which will result in mold and premature wood rot and masonary deterioration. Especially if your walls are all below grade.
This is the case even if you have what you would consider a dry basement. Condensation resulting from temperature change will be enough to make a mess of things. There are many schools of thought on how to prevent this including putting plastic between the framing and the drywall, putting plastic between the framing and the exterior wall, etc.
There are a couple of companies that have recently come out with insulation that is wrapped in plastic (R-13) to keep moisture out of the insulation. This can still trap moisture against the exterior wall however, unless you leave enough space for air to circulate. In fact, I am finishing my entire basement, and other than the small area of exterior wall that is within the theater room, I am not going to insulate the framed walls along the rest of the basement. I will just be putting drywall against the studs. And my framing is about 3/4" off of the concrete block wall. I may be in the minority on this one (and I probably am), but because my basement is completely below grade, I don't believe that I will gain that much more thermal protection than the ground surrounding my basement already provides. I am however, using R-30 insulation in my ceiling. As you know heat rises. That makes more of a difference than what's in the walls if they are below grade as far as thermal retention, IMHO.
You would not want hollow wall cavities for acoustic purposes however, so as I mentioned, I did insulate the walls aound the HT part of the basement, but they are interior framing for the most part. You just don't want to trap moisture in your walls if at all possible.