R89 insulation, on the other hand, requires more careful installation to ensure proper fit and performance. It's typically installed in walls, floors, and ceilings using a combination of staples, nails, or adhesive.

Adel 9 insulation is relatively easy to install, as it can be cut to size using a utility knife or scissors. It's typically installed in attics, walls, and floors using staples or tape.

Adel 9 (if you have thick hair); R89 (if you have normal or thin hair).

One for the heavy lifting, one for the daily maintenance.