1. If I blow in the basement walls from the outside what effect will
breaking the vapour barrier for each 2" hole have? The basement wall has
approx 4' fibreglass installed between studs but I need to insulate between
the foundation wall and gyproc.
2. How do I insulate a finished basement ceiling with 2x10 joists? I was
considering blowing in cellulose by drilling 2" holes between each joist
from the plywood floor above but this would result in TOO much insulation.
9.5" of cellulose is approx R40 where I only need R12-19. If I partially
fill, will the cellulose evenly distribute itself?