Dangers which you may have to encounter while removing insulationinsulationmachines.net If the insulation in your attic and crawlspace is settled over the years, or it is appearing wet or moldy. Insulation may get damaged due to presence of pests and there is air leakage in it. These signs show that there is need to remove old insulation and replace it with new and more effective insulation. For removing old insulation, you should use insulation removal vacuums, with this machine, you can efficiently remove old insulation. If you are going to do it by yourself, then there are few things which you should keep in mind, for DIY insulation removal.