If you displace insulation in order to move around in the attic don t forget to put it back as you leave.
Attic walkway over insulation.
You could also lightly spray for insects over fiberglass if needed.
The blown in insulation can be blown right over the ductwork.
I would recommend fiberglass blown in insulation rather than cellulose because it is not conducive to insects.
Work from the perimeter of the attic toward the door or hatch so that you don t trample all over the insulation you just put in.
Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and to prevent thermal bridging the heat loss that occurs through the wood framing.
Exposed floor joists can cause condensation on the inside of the ceiling peeling paint and nail rusting.
The trail you leave in the attic can easily end up tracing a path on the ceiling below.
Walk to one end of the attic by carefully stepping only on the wooden ceiling joists.