It can be done. Like I said, I do it all the time. It takes a little bit of skill because you can end up with all the fiberglass bunched up at the top of the bay. If your blowing from the inside you'd need to make sure you don't break the kraft paper. Just slide the hose up between it and the drywall. If it were my house I'd either just leave the fiberglass in there or I'd cut long strips of drywall out and pull it out. Ultimately I'd end up doing the latter. You can't fill the cavity completely with cellulose, obviously, because there is already fiberglass in there and compressed fiberglass has little R value. For some reason, though, auditors will occasionally spec this kind of job, so I end up doing it. And a 2x4 cavity is usually filled with R 13. Not sure where the R 7 number came from.
__________________
My project:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Chipping away on a daily basis.
Quote:
|
You know you're an ecorenovator if anything worth insulating is worth superinsulating.
|
Quote:
S-F: "What happens when you slam the door on a really tight house? Do the basement windows blow out?"
Green Building Guru: "You can't slam the door on a really tight house. You have to work to pull it shut."
|
|