I used r30 batts then used 6" of blown over that.
I used r30 batts then used 6" of blown over that.
Blown in is inexpensive both to buy and to install. I discovered years ago when I wanted to insulate my garage/shop attic. I could have bought the blow in from HD, and used their blower for free, but I learned it's not only a rather unpleasant task, it takes at least 2 people. One to direct the insulation coming out of the hose, and one on the ground to feed the blower. Then I check with a local insulation company, and found they would supply the material and do the whole job for the same price as I would have paid HD.
6" of blown didn't compress anything.This ends up compressing the batts, and decreasing their contribution to the total insulation level. the batts must be fluffed to their design height to provide the specified insulation level and that doesn't happen when you pile stuff on top of it.
Bang for the buck, blown cellulose is probably one of the better choices - it fills nooks and crannies and stops convective losses through air movement (if there is any). In an old install, a quick check for air infiltration with fiberglass batts is to look for discoloration...the fiberglass is acting like an air filter. WHen this happens, you lose a lot of the theoretical performance.
6" of blown didn't compress anything.
Have you measured recently? It can take awhile to compress. Or, your blown-in component wasn't very dense.
So you didn't measure it.
You're missing the point...obviously, adding insulation helps. But, putting blown in over a batt type compresses the batt. Your total insulation level wouldn't be as high as if you'd either used all blown-in, or put the batts on top of the blown in. IOW, you didn't get the full benefit of what you installed.
You're missing the point...obviously, adding insulation helps. But, putting blown in over a batt type compresses the batt. Your total insulation level wouldn't be as high as if you'd either used all blown-in, or put the batts on top of the blown in. IOW, you didn't get the full benefit of what you installed.
This is awkward, but...
It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.
If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.