Reply To: Noise abatement
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That video is really quite good.
The ‘rockwool’, or similar, he’s using is super fire-resistant, and a good sound absorber. I’ve used it for heat insulation and you are supposed to mask up while installing it and it did irritate my skin if I touched it (its similar to fiberglass but the fibers are curly and tangled up so they don’t get around as much). A package of 8 bats is something like $60.
The clapping he does is the quick rt60 echo test. You clap once and listen to how long the clap sound reverberates. 1 second would be a normal indoor room. A concrete parking garage might get 3 seconds.
And the example that the little patch of stuff covering what 5%? of the room did nothing, but covering maybe 33% of the ceiling made a big difference is very much in line with what I have read.
Living in earthquake country I might make the frames a lot lighter, or seal the insulation into bags of some sort and avoid any hard stuff overhead. I would want to seal it so it doesn’t fill up with sawdust… and because it is just ugly.
- This reply was modified 3 years, 4 months ago by jeff Fisher.