Cavity only fiberglass – for use in attic?

Hi, I am in zone 4a and am building a pretty good shop/house on a shoe string.  What is the problem of using blow in fiberglass insulation in my vented attic.… Hi, I am in zone 4a and am building a pretty good shop/house on a shoe string.  What is the problem of using blow in fiberglass insulation in my vented attic.…Read MoreGreenBuildingAdvisor