The worst thing this industry ever did was to think this material was a viable option to insulate air ducts. It is almost useless as an insulating barrier. Once it was discovered that Asbestos has Cancer causing particles in it, it was band from all construction practices. Here is what it takes to have it removed professionally by an Asbestos Abatement company. They will then be able to certify that that your home or business ducts have been removed of this cancer causing material.