 This is an eight items energy smart home performance and I want to show you a really typical thing that happens in knee walls I can see it down here to see where this is sticking out. Those bats are only three and a half inches thick So if it's not touching the wall, it's really not doing anything and Same things going here. I pulled this out So This is not doing its job at all And that's one of the reasons that a lot of people don't really like fiberglass insulation if you spray foam this or Net and blow it Or some other method. It's a much more likely to actually contact the surface needs to be insulated, which is the drywall in there