If the attic is not large enough for a person to move around try tying a rope to the vacuum.
How to remove old attic isulation.
Gather the right equipment.
Rent a powerful hepa filter insulation removal vacuum from an equipment rental yard.
How to remove blown in insulation.
With these in place you ll be able to walk around the attic while removing the insulation.
Gradually pull the vacuum toward you as it sucks up the insulation.
Use the 6 inch 150 foot flexible vacuum hose to draw the insulation from the attic into large bags for disposal.
Use the commercial vacuum hose to remove the insulation and clean the attic floor.
Set up tarp and trashbags.
Use rakes to collect insulation on to dustpan place collected insulation into waste bag without commercial vacuum usage.
Some attic spaces are very small and tight finding creative ways to maneuver the vacuum inside the attic will go a long way.
Use the shop vac to remove remaining insulation after raking and vacuum the attic floor without commercial vacuum usage.
There are several different types of insulation so you should first identify the type you have in your attic.